New Groundbreaking -Metal Treatment!

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Prevent Dry Starts On cold Days


New! HP 6 Pack On Sale. Save Big!

Includes 2 each HP Engine Treatment, 4 Fuel Conditioners and Free shipping! 

For Your Daily Driver or Your Race Car.

Kit includes everything needed to protect even better with the new HP Engine Treatment to preserve, and lubricate your engine from LSPI and other issues.

This New Patented technology will increase performance, durability and engine efficiency in your vehicle. New HP Engine treatment pre-cleans and protects internal components; resists friction and wear; provides optimum efficiency and performance; improves fuel economy and performance. 



Truckers Get Longer Engine Life - 15 Years of Proven Results and 52 Worldwide Patents to Prove It!

BestLine will quiet motors, reduce friction that will increase horse power and reduce heat. BestLine provides the highest degree of wear reduction, lubrication. All BestLine oil additives contain our patented Extreme Pressure lubricity component and wear reduction agent. Performance is guaranteed! 

If you want the best in engine protection then you've come to the right place.  See our reviews from other truckers.  Get the best lubrication for demanding applications, use BestLine today.



New HP Engine Treatment

We've made the best even better! With more of our patented lubricity components for more protection, less noise and more power. Available now on sale when you buy the kits. 

New Improved 8 Pack - ON SALE Now!
Review: Caterpillar Diesel Engine Treated with BestLine Then Drained the Oil

Review: Caterpillar Diesel Engine Treated with BestLine Then Drained the Oil

See the Review Video Here - Youtube

Frequently asked questions about additives.

Frequently asked questions about additives.

BestLine pays for itself by reducing fuel consumption and wear on important mechanical components


Reduce noise, smoke and renew your engine performance

A radically new line of patented metal treatments that are also extreme pressure lubricants that dramatically reduce friction, heat and mechanical wear to an extent never before seen. BestLine lubricity is unaffected by fuel dilution in race motors so you can boost performance and extend engine and bearing life. BestLine

Engine Treatments make bearings and all other mechanical components last more than 80% longer. 


Your engine will last up to 80% longer. We stand behind it with 52 worldwide patents!

New technology in lubrication and metal treatments with 52 worldwide patents extends engine and equipment life and reduces lifter and other noise as documented in WEAR international tribology magazine.

Tested and proven by the leading Swiss Federal Institute of Technology in Lausanne (EPFL), a study is published by the world-renowned scientific journal “WEAR” from Elsevier.