About BestLine

 Independent Test Results



ABOUT US: See this link for our Corporate overview and testing documents. 

Motorcycle race teams such as Valerie Thompson Racing, Worlds Fastest Woman ( over 334 mph ) and auto racing teams such as NHRA Nitro Funny Car, Chris Davis, Dan Dothsuk Pro Modified owner, Mike at MRL performance, Mike Cope Racing, KC Gager at BRG Racing, and car enthusiasts want the best protection possible for their equipment, calling for rugged oils that exhibit high temperature deposit control additives. The Racing Additives Team has researched, tested and offers the best Synthetic Motor Oils and Additives which are specially formulated with the best synthetic base stocks and high performance additives to provide tough lubricating protection for all racing and street engines. Race engines perform better with BestLine because we don't lose our metal protection when the oil gets diluted from the fuel getting by the rings on high horsepower NHRA type race cars. 

You can expect: 

  • Quieter, smoother running engine
  • Lower Temperatures
  • Greater fuel efficiency due to reduced friction
  • Easier cold weather starting
  • Improved engine response
  • Reduced exhaust emissions
  • Works will all quality mineral or full synthetic oils

 What BestLine Lubricants doesn't do

  • We don't use anything that causes acidification of the oil that can cause pitting and wear like some other oil additives. 
  • We don't cause deposits ( gunk )to form in the crankcase.

Most of our products are also available at Amazon.com and HomeDepot.com 

The BestLine Engine and Powertrain Treatments are a unique 100% pure synthetic metal treatment that are compatible with all motor oils. BestLine Engine Treatment is engineered specifically for the internal combustion engine. Gasoline, diesel, natural gas or propane, it makes no difference. 

BestLine Engine Treatment coats all metal surfaces with a protective layer of molecules. Without BestLine, within hours of turning your engine off, virtually no oil remains on engine parts; gravity will have drained it all into the oil sump. Ninety per cent of an engine’s wear occurs during cold starts in the first critical moments before the motor’s oil fully circulates. BestLine's Engine Treatment can help protect your engine from wear by providing a crucial layer of protection.

The BestLine Engine Treatment utilizes the package of additives present in your own oil and so takes on the characteristics of whichever oil it is used with, synthetic or mineral. BestLine with its 52 worldwide patents is most effective under the most severe operating conditions. Unlike many oil additives and engine treatments, BestLine will not interfere with engineered tolerances and cannot adversely affect engine performance. BestLine contains no solids of any kind. It contains no plastic particles or P.T.F.E. resins (Poly Tetra Fluoro Ethylene also more commonly know as Teflon). It contains no molybdenum disulfide or any potentially toxic and environmentally hazardous metals such as copper or lead or any other metal.

BestLine helps break the vicious cycle of heat from friction expanding the metal resulting in more friction, which may ultimately cause engine failure. Conventional oil becomes less viscous at elevated temperatures and flows away from the heat. However BestLine is actually attracted to any hot spots. These hot spots are areas where tighter engineering tolerances make for increased friction and therefore more heat and wear. With the increased temperature there will be an increase in available charge, which attracts more of the BestLine molecules, bonding them to the metal surface. This provides crucial increased lubrication of the metal where it is needed most.

BestLine has proven to extend the useful life of the oil and allow it to work better for longer but we DO NOT recommend deviating from manufacturer’s warranty guidelines.

This unique, specially developed, time tested and proven product can be a tremendous boost to the efficiency of your automobile. To maximize these benefits, you should utilize the entire BestLine product line: Fuel Conditioner to lubricate the upper engine and improve the burn characteristics of the fuel, thereby releasing more energy; Powertrain Formulation to reduce drag and friction down the drive trains. 

Why Change the Engine Oil? 

We get asked this all the time so I thought it might be a good time to explain whats going on in the engine / crankcase. 

Things that can go very wrong. 

1. Moisture in the crankcase can turn acidic causing pitting and excessive mechanical wear over time. If you live in a humid environment this can be a big factor in how often to change the oil. 

2.  It's not necessarily the amount you drive so much as it is the way or conditions you drive in. Hot temperatures, humidity, hill climbs, traffic and towing all contribute to the soot, ash, metal particulates and the breakdown of the critical viscosity of the oil. 

See more below about how often to change the oil: 

When asked, you may hear answers such as every 3000, 5000 or 7500 miles, or when the vehicle's oil monitor indicates that this service is necessary. It is no wonder consumers are confused. The simplest answer... well, there is no simple answer! In fact, there is no interval that applies to most vehicles.

The engine serves as the heart of your vehicle, so changing its oil based on the manufacturer's recommendation is perhaps the single most important thing that you can do to keep your vehicle's engine running longer. However, you must read these recommendations closely to determine the correct interval; the interval that matches your vehicle's operating conditions and your driving habits.

The normal interval listed in the owner's manual applies to vehicles driven under ideal conditions. While you may consider your driving habits and operating conditions quite normal, read the fine print. Some exceptions to normal driving include:

Frequent short trips (less than 10 miles, especially during cold weather)

High humidity

Stop-and-go city traffic driving

Driving in dusty conditions, on gravel roads, etc.

Driving at sustained highway speeds during hot weather


Diesel or turbocharged engine

These conditions commonly appear in the description of severe service driving.

 AMRA/MAP advises that you read your owner's manual to locate the correct interval.

 What about the 3000 mile oil change myth?

Consider these facts: 


Oil requires complex additives and detergents to help prevent corrosion and sludge buildup

Additives allow oil to flow freely at extremely cold temperatures while also providing protection under extremely hot temperatures

Testing shows that at 3000 miles the oil itself still lubricates, but the depletion of critical additives may no longer allow the oil to offer the same protection and benefits

Longer intervals may benefit the environment, but perhaps at the expense of engine life

Re-refined oils offer an alternative for motorists with concerns about the environment

Re-refined oils use the remaining lubricating qualities of used oil, and replenish the depleted additives to create oils that meet the quality of new oil

Proper Maintenance Helps Extend Vehicle Life!


Your driving type or vehicle usage may affect the maintenance intervals below.


You should follow the manufacturer's service schedule that best matches your vehicle's operating conditions.


Bottom line is that BestLine with its 52 worldwide patents prove that it protects the engine over these severe driving conditions and greatly reduces the tendency for the oil to become acidic. Increasing the life of the critical engine components is what we do best. 




Other videos that show why BestLine is the very best. 






Published on Aug 21, 2015

Showing a BMW standing coin test on the engine while its running. The bestline engine treatment additive makes the engine run so smooth the coin won't tip over. Now ask yourself, does your engine run that smooth??? my engine has 186k plus miles on it and its still going stronger, smoother and quieter . thanks bestline...


What Harry said June 8th 2016: Owner of the Motorcycle training institute in Red Bluff CA. 

I own 20 training motorcycles. As you can imagine, they get their fair share of abuse. Idling, numerous starts and stops, stalling, quick clutch releases at times, over-revving, shifting without the clutch disengaged, etc.

 Looking for real world protection, I have tried many additives over the last 20 years. Slick 50, Duralube, Lucas oil, STP, Amsoil, Johnsen’s, the list goes on. Never noticed any difference. Then I came across BestLine. Saw the information on the web, watched some videos and thought it was just another false claim. Until this:

 I purchased a few bottles of BestLine to try in my boat (1982 Mercruiser 140) that had a knocking sound. Changed the oil, added the recommended 10% and in less than 5 minutes the knock was gone. Completely. Idles much better. Impressive.

 This sparked my interest. I decided to do an experiment on a training motorcycle we no longer use anymore due to aesthetics (1990 Honda CB 125T). This training motorcycle has over 10,000 parking lot miles on it and a stock clutch. No engine repair ever. I added approximately 15% BestLine Engine Treatment, added oil to the full mark and ran it on the center stand for about 30 minutes while in second gear. I then aired up the tires, took it out for a test ride. I immediately noticed a smoother solid engagement of the clutch. It ran great!

 Due to my sheer morbid curiosity, I wanted to see if the CB125T would last without oil. I drained the oil, and kept the engine on and running without the drain plug in. The bike was again on the center stand in second gear. With an hour meter attached, it ran for 26+ hours. The reason it stopped running is because it ran out of gas. I’m Sold!

On April 10th 2016 I added 15% BestLine in a 2005 Honda CB250 Nighthawk training motorcycle. It now has 758 miles on the oil. The oil is still gold in color. Although these are great running motorcycles, it idles smoother, shifts smoother and runs quieter.

I will not only run BestLine Engine Treatment in all my training motorcycles, but in my car, truck and personal motorcycles. If BestLine Engine Treatment isn’t in your oil, you are not caring for your engine. Period.

 Stand by for a YouTube experiment as soon as I get help with video. I’ll SHOW proof.

 Thanks to the staff at BestLine that answered all my questions.


Martin wrote: 2016

My 2012 KIA SERENTO SX V6 gets better gas mileage plus revs better, it has 276 HP but since I added 32 oz of BestLine engine treatment to my oil its feels like it has 300 hp! 

DARREN wrote:  2016

I have been using bestline lubricants in my car, truck and motorcycle for the past year and I am proud to say I am a believer. My vehicles run smoother and shift effortlessly, no stalling, or slippage of gears. I will continue my patronage of this product and company for the foreseeable future.

William wrote:  2016

Bestline oil additive has worked great to clean out my engines, as well as adding excellent wear protection. I use it for my own engines, and for my customer's engines.

Antonio wrote: 2016

Used it on my eco diesel ram 2015 absorbed into metal quickly and runs smoothly with more power. 

Joseph wrote: 2016

After I use Bestline my car running smooth and no more weird sound..Highly recommend to use this product.

RICHARD wrote: 2016

I run bestline in all my cars, but I am out , please send me a coupon I would like to put it in my Goldwing.

Siegfried wrote: 2016

I have been using your (BestLine) oil additive in my 49cc Chinese clone scooter from day one. Because this is my ONLY form of transportation, I have put several thousand miles on it without any problems. The motor’s compression is like new and there’s been no problems whatsoever. I am so glad that I found you guys… Thank you for making a great product.

JEFF wrote: 2016

Hello I've been using BestLine for yrs. Now I have a truck with noisy lifter and only BestLine has made it a lot more quite . I've tried just about every thing on market. 

Joseph wrote: 2016

After I use BestLine my car is running smooth and no more weird sound..Highly recommend to use this product.

John wrote: in 2016

Thanks Bestline for your great products. Have been using the engine treatment and drive train treatment in my 96 Ford Ranger now for about 2 years. The engine has 248,000 miles on it runs great . I know the Bestline has really helped to really clean up my engine over the last few years. I can really feel the performance of the engine with the Bestline added. Can't afford a new vehicle now so I know with the help of Bestline my Ranger could see 400,000 Plus 

Cazzey wrote: 2016

"I tried Best Line lubricants because I had been having troubles with both my Harley Davidson Softail, and the big diesel rig that I use to carry my Harley's around. It was on a whim that I found their product online, and was intrigued as I looked further into their claims. But when I noted how difficult it was to locate their products in stores, I was crestfallen--very much wanting to try it, but not wanting to wait for weeks to put the stuff in my vehicle. But I am glad that I decided to take that risk and wait it out. 

I purchased the transmission lubricant for the diesel rig as well as the diesel engine lubricant. The shifting immediately smoothed out, and even increased in power over time. The engine quieted and seemed to generate less heat. Along with these two, I purchased the fuel supplement and the gasoline engine lubricant, and put these into the Harley. I noted additional MPG from the fuel supplement and less oil burning with the engine lubricant. And, for those who know Harleys, they burn through a lot of oil--especially the old hogs. It may be a little more expensive, and still is difficult to get your hands on unless you want to wait for it to arrive in the mail, but the old saying goes, "You get what you pay for." You can go get some cheap stuff at your local auto parts store, and you'll get cheap results. But if you want amazing results which may have you raising your eyebrows up in shock, then get BestLine."

CrabsClaw wrote:  I have used this in two vehicles now, and I can sure feel the difference. Going to try it in my motorcycle, and lawn mowers next. Thanks, for making a great product.

  • In January 2015 I purchased a 2001 Chrysler Sebring LXi with 49,000 miles from my 86 year old mother-in-law who was no longer able to drive. The car has the 2.7L V6 motor which is known to run a little hot and have oil pressure issues. She always used regular oil and changed it every 3000 miles. When I got the car home I changed the oil and installed synthetic oil and added 5 ounces of BestLine engine treatment. Mileage went up, performance went up, and the engine ran quieter… all exactly what I was hoping for and the car has been terrific.

    In July of this year my son’s truck was having brake issues so I loaned him the Sebring while I casually got to his truck. When I got the Sebring back we went to dinner with the family and I noticed the oil light came on every time I stopped at a sign or light. He only drove the Sebring for two weeks and drove it hard enough to burn 4 quarts of oil out of it. And the mileage was now at 11 mpg (normally 27 mpg) as shown by the computer. I did a quick oil change which included another 5 ounces of BestLine engine treatment and went on with life. On August 26,2016 my wife commented the engine had been making a knocking sound for the past week or so when she started it, but would quickly go silent after a few seconds. This terrified me so I checked it for myself. Sure enough, a rod knock at startup. If you increased the engine speed the knock would be louder but then go silent. Not a good sign.

    I drained the oil and sure enough, there were some large pieces of rod bearing material that came out with the oil. I cut the old oil filter open and found lots of metal inside the filter. A few hours later I had the oil pan off and it was full of metal pieces. My heart sank as I was informed it would cost $2500 for an engine replacement.

    The #2 rod bearing was the worst, it had spun inside the rod and was self destructing. Two other rod bearings were also breaking apart and spitting the mashed bearing material out into the pan. I checked the crankshaft with a micrometer and it was at stock specs. I checked the #2 rod and it looked normal. Therefore I used 320 grit emery cloth and cleaned cleaned off a few pieces of aluminum that had adhered to the crankshaft rod journals, cleaned everything, installed new standard bearings, put oil and filter on and it’s running awesome again.

    Normally spun bearings require a rebuild (lots of money) but not in this case. BestLine Engine treatment did the job it said it would. I will always have this product in all of my engines, small and large. Thank you BestLine, you have a lifetime customer and advocate. BTW, I still have the parts I removed as well as photos, they are great conversation pieces.

    Charlie Shelton on
  • Last Sept. I purchased a F150 , 2014 with 48000 miles. The truck runs fine . After watching their test on their oil I thought I would give it a try. I purchased the oil additive package with the No- Skweek & gas treatment . The first oil change after using the oil treatment , the oil was really black, but the second oil change was much different in color. Could it be that what they claim is really working? Well we are ready for our third oil change and will see how it looks. By the way, I also used the gas additive and have seen a increase in gas mileage of three more gallons per mile. Also I have used No- Skweek with good results. My wife loves it, she used it on the plastic slides on our porch windows and what a difference when opening and closing them. Thanks for the great products, Larry

    Larry Sarvis on
  • I have a V-6 Dodge van that developed a dead miss, which caused me to park the van. After several months of no use, I started it to discover that it rattled horribly from old oil and lack of use. I shut it off and decided it would not be good to run the engine again until after an oil change, and an effort to find and eliminate the miss. My “mechanic” (National Tire Chain) would not do a plug change, or an injector cleaning, or even an oil change w/o running tests first. The estimated charges went up very quickly. So the van sat again for months. I decided to buy a Bestline oil treatment after seeing some demonstrations of Bestline Oil Treatment on u-tube. Before I could get to the oil change, I had a family crisis that forced me to use the van. I was sure it would self destruct, As I was leaving my house I grabbed the Bestline treatment and poured it in the old oil in the hopes it might help. The van rattled badly when started, the miss was so bad that it stalled whenever I slowed to a stop. Now the miss is either in the injector system or a fouled plug, so I didn’t expect what happened next. After about a mile of driving the engine started to run smoother and quit stalling. I arrived at my destination and could not believe how much the effect of miss had lessened. The van sat for about an hour, and when I restarted it the rattle was almost completely quieted, even with the old depleted oil. As I drove home the van ran quieter and acted like 5 cylinders was all it needed to run without chugging and stalling. The miss was still there, but the engine was running so freely that it was no longer a big issue. I am counting the first bottle as a cleaning bottle, and an engine saver. I ordered more and will add to my oil changes. I’m glad I found this product! It is the real thing. And the company actually answers the phone and supports their products with knowledge. I’ve tried many additives over the years, and nothing has made such an obvious difference. Thanks again for your great products and technical advice.

    Roger Park on
  • I recently purchased the Bestline Engine Treatment for my 2003 Dodge Ram 1500 with a 5.7 Hemi motor. The motor was making some kind of ticking sound. So I added it to my motor oil and the ticking has gone away. It is running much smoother and I am getting better gas mileage. Great Product! Thanks Bestline!

    Chuck Vogl on
  • I have a v-6 dodge van that developed a very bad miss that caused the van to be parked for several months. When I started finally started it, I thought the engine was going to self destruct. I bought the engine oil treatment and was planning a oil change. An emergency required me to use the vehicle. I did not want to drive it with bad oil and a dead cylinder. I figured if I used the additive before driving it might help. The rattle and miss were every bit as bad as I remembered. I drove about a mile and the miss seemed to lessen, and after a couple more it became almost unnoticeable. After reaching my destination it sat for about an hour, and even with the bad oil, the rattle was insignificant. And the engine was running so freely that the miss had little effect. The miss is either a plug or an injector, but the oil additive made an amazing difference. Obviously I’m going to run the fuel additive, and if it as the oil additive, it should clean the carbon out and fix the miss!

    Roger Park on
  • My experience with best line well it’s just the best product I ever tried i used on a big rig and I experiencing a lot on fuell economy and my oil life is longer I totally recomiende

    IGnacio Sandoval on
  • I have used BestLine engine treatment for a couple of years now. I definitely see an increase in mileage, the engine seems to run smoother, and a reduction in engine temperature. I also use it in my lawnmowers, air-conditioning fans, attic exhaust fans, condenser fans, and 4 wheelers. It is my Go-To oil lubricant for equipment. I highly recommend this product.

    Doug on
  • I have used bestline additives for several years now in my vehicles and it has worked very well in improving fuel economy with smoother operation. Customer support has been attentive also.

    Phil DeLoria on
  • My newly acquired Jeep Commander “07” had been not well maintained by previous owners. The engine ticking sound bothered the crap out of me. As well as the exhaust dripping fluid constantly and smoking. Immediately I started researching solutions. I choose Bestline and after a couple applications the ticking went away completely. There isn’t any more dripping from tailpipe or clouds of smoke. To be on the preventative side I will continue using Bestline for I love my Jeep and plan on keeping it for as long as possible.
    B.T.W. I’m driving 60 hours a week now with Uber. In 8 weeks I have driven less than 12K miles and 3 oil changes later. Odometer is now approaching 170,000

    Shaun H. on
  • I recently purchased a 1982 Jeep Scrambler that had been sitting in a barn for almost two decades. After exposing the engine internals by taking off the valve cover, oil pan, and timing chain, I realized that large amounts of oil and gunk deposits were everywhere. I was worried that I wouldn’t be able to get it running again due to this issue. I replaced the timing chain sprocket, timing chain, multiple gaskets, etc. and sealed the engine back up. I added two bottles of Bestline engine treatment to the oil and fired it up. The valves we clicking for about 10 seconds which again worried me but all of a sudden the engine smoothed out and it started operating like a new engine!! I ran it for about an hour and then took the valve cover off to inspect the head. It was amazing how much cleaner everything was and I attribute it to Bestline! I have never seen anything like it. Thank you so much for providing such an outstanding product! I am a customer for life!

    I could use a bottle of bestline engine treatment. Thanks again!

    Josh Marcus on
  • Aircraft Mechanic for over 30 years! Looooooooooove Best Line Products
    1.Air Comp would blow fuse at 40 Degrees = Best Line works at -4 degrees
    2.2014 Dodge Dart and Charger over 5 MPG increase.
    3.2005 Dodge Dakota runs smooth increase in MPG
    4.2005 Bobcat Diesel runs better. 40 year old fan no more squeek

    John Minichiello on
  • It would be very helpfull if the product discription contained readily available information stating the amount or ratio to be used with… say a standard 5 or 6 quart oil change. How does one know how much to mix. I usually don’t have time to research those kind of things.

    Bill on
  • I have an 2006 Acura TL with two bottle of bestline engine treatment got my oil changed my car feels like it will never break ever again. Ever ever ever ever again…

    I like to drive my car like a maniac quite often and this magic oil really does the trick. Don’t believe me? Get two bottles of the engine treatment and try it. You will thank me and Mr. Anderson later.

    I also recommend putting a safe lubricant in your gas tank so your piston heads and will be lubricated. Because there are some parts in your engine that the oil will not touch that’s why you should lubricate the fuel tank too.

    arash menalagha on