Diesel Truck and Heavy Equipment

Fleet managers and company owners know what is the single biggest company expense.  Fuel is the biggest expense, saving 10% on fuel costs can save a company many thousands of dollars each month.  With the proper diesel fuel additive you will save on fuel, lower your DPF regeneration times and reduce mechanical failures within the fuel system. 



BestLine Diesel fuel treatment adds up to 12 more points of Cetane boost. 

The increase of Cetane rating from 46.2 to 58.1 (an increase of 11.9 Cetane rating points) demonstrated that for each ounce of BestLine’s DFT that was added to ten (10) gallons of Diesel fuel, the Cetane rating was increased by 3.96 points! Such an increase will result in a much better performing engine.

It should be noted that GAT’s testing of BestLine’s DFT was a third party test, and one that was performed totally without BestLine’s knowledge.

In summary, BestLine’s Diesel Fuel Treatment:

- Boosts the Cetane Rating (as demonstrated above):

o Improves power

o Increases performance

o Improves efficiency and mileage

- Provides Superior Lubrication:

o BestLine’s DFT, using the industry standard HFRR test has been shown, using only 2 ounces per 10 gallons of fuel, to reduce wear by over 25%

- Stabilizes Fuel:

o Maintains optimum performance even when the fuel is stored for long periods

- Improves Cold Flow:

o Bonds with the wax to help prevent clumping

o Generally lowers the cloud point and pour point by 10℉ to 13℉

o Effective to below -45℉ with a good quality arctic blend of Diesel fuel

- Provides a Biocide:

o Stops the growth of algae and bacteria that can degrade performance and clog filters.

BestLine’s Diesel Fuel Treatment is the Best Diesel Fuel Additive Available! 

diesel engine oil additive


This is a summary of the benefits of and tests relative to BestLine's Diesel Fuel Treatment. Copies of a detailed test report can be provided upon request. Although the test report is based on the use of low sulfur diesel rather than the current ultra low sulfur diesel, the reader is able to draw conclusions of the effect BestLine's Diesel Fuel Treatment will have on current applications.

The tests were conducted using BestLine's Diesel Fuel Treatment without the benefit of the cetane booster components normally added. The cetane booster was purposely left out of the formulation at the request of the client performing the tests. The cetane booster was then added equally to the untreated and treated fuel to raise the cetane level for cold start purposes and to assure fairness in the tests.

Test Description

The test involved the use
of a fleet of 22 tractor
(class 8) units operating
 with Cummins VT-903
 engines operating on low
 sulfur diesel (LSD). Each
 tractor had accumulated 
at least 200,000 miles so
 that all tests would be 
stabilized. The horse power
 on the units ran between
 302 and 330, and oil change intervals were set at 10,000 miles.

The test period ran for approx 18 months with 13 of the tractors using the BestLine Diesel fuel Treatment. The total accumulated miles over the 18 month period was 1.8 million miles. The drivers were unaware of the fuel tests being performed.


The test demonstrated that the fuel savings greatly outweigh the cost of the product. This is shown by the average test results of 5.7% savings without the benefit of a cetane booster. With the benefit of the cetane booster, stationary diesel engine tests, under full load conditions, have demonstrated fuel savings of 12.25% to 16.57%.

  • Improved Fuel Efficiency
  • Increased Power Output
  • Reduced Exhaust Emissions
  • Lubricates and Cleans Injectors
  • Protects Against Corrosion
  • Improved Filter Life
  • Reduced Friction, Wear and Heat


Results of the test demonstrated that the tractors running on fuel treated with BestLine Diesel Fuel Treatment (without cetane booster component) recorded a 5.7% increase in fuel economy on the dynamometer while per ton mile calculations showed an advantage of 4.4% for the tractors using the treated fuel.

The combined measurement system was capable of measuring specific fuel consumption (lbs Per BHP-HR) with a 95% confidence level.

The untreated tractors from the beginning to the end of the test experienced an increase of 5.5% in fuel consumption while the average for the tractors burning the treated fuel experienced 3.5% reduction in fuel consumption. The net advantage for the treated tractors was 9.0% in lower fuel consumption for the treated tractors. (Once again, a vital component of BestLine's Fuel Treatment is the cetane booster package, which was purposely left out so the drivers would not experience any change in driving effect or be aware of their fuel test being conducted).

Brake horsepower (HP) in the tractors burning the untreated fuel showed a decrease of -0.54% HP while the tractors burning the treated fuel experienced +5.16% increases in brake horsepower. The adjusted effect of Brake Horsepower Increase (BSFC) was 5.70% increase with a confidence level of 95%.


Net brake horsepower improvement
Accumulated data showed a 4.4% gain in ton-miles/gallon while the dynamometer measured a 5.7% gain in fuel economy. The 5.7% was based on repeatable dynamometer measurements. Statistical analysis of the data showed the gain is highly significant at the 95% level of confidence.

Note: The BestLine Diesel Fuel Treatment with the Cetane booster package should deliver 2-4% gain, resulting in a total gain of 7.7% to 9.7%, if all other conditions remain unchanged.


Numerous tests (13 Mode Test Procedures) were conducted to monitor the changes in emissions from the untreated fuel to the treated fuel. With many states and provinces showing concerns over stack pollution or soot, drivers need to be aware of such issues where infractions or substantive fines may be imposed against them. A reduction in particulates can eliminate roadside testing. A snapshot of the improved results are shown as follows:

Reduction of emissions





Particulate (Soot)     10.9 %



Prior to the above testing, the fuel treatment was tested on a naturally aspirated stationary Lister diesel test engine stand while under maximum load and in a temperature-controlled environment. Although this is not a true representation of highway driving, it is a repeatable fuel efficiency test conducted under strictly controlled conditions. The fuel was weighed and measured, and the data shows the following savings in fuel usage:

Fuel savings based on quantity of BestLine treatment per ten gallons

1.0 oz             12.257%

1.5 oz             13.601%

2.0 oz             14.285%

2.5 oz             16.575%



BestLine's Diesel Engine Treatment and BestLine's Power Train Lubricant have been tested in both controlled engine and equipment tests, including the CRC L-38, Sequence VIII and the Sequence VIB. The results of the testing have shown that when the products, when used with existing oils, at a ratio of 8% to 15% percent by volume, have maintained oil viscosity, reduced fuel consumption, engine sludge, varnish and bearing wear. The following average is for wear, friction and heat using a 10% blend of the Engine Treatment or Power Train Lubricant, when added to either synthetic or mineral base motor oils, when tested on metal-to-metal contact.

Friction Reduced (average): 17.0%

Temperature Reduced (average): 25.0%

Wear Reduced (average): 47.0%

11.3% economy on a 1 MW Generator Set 

On May 22, 2015 CD & Power & BestLine Research Inc operated a test to compare the fuel burn rate on a 1WM generator with and without BestLine Diesel Fuel Treatment, resulting in a 11.30 % economy in consumption with BestLine's additive.

Diesel power

Test description 
The fuel supply was routed from a manifold on the refueling truck through a new fuel flow meter from GPI.

flow meter

This flow meter was used as the primary method of determining the fuel burn rate by comparing how much fuel was added to the main onboard fuel tank as compared to how much was remaining after it was drained back into the refueling truck through this same flow meter.

The onboard 1000 gallon fuel tank was fully drained and documented via the fuel tank drain at the bottom / outside fuel drain port after each testing cycle. See photo

The data was collected by two CD & Power technicians throughout the process. The testing protocol was strictly adhered to and recorded to ensure the engine was operated under the same scenario for both baseline and comparison testing.

Engine Power / Load Center 
The engine power was controlled and measured by the 1 Megawatt load center.

1 mega watt Load Center

Testing Protocol
The test consisted of a 1 MW generator and Load Center capable of applying a load to the generator to simulate actual loads under normal operation.

1. Each test (Without Fuel Additive and With Fuel Additive) was conducted three times with one refueling event at the start of the test and drained fully and measured at the completion of the test.
2. The measured remaining fuel was subtracted from the amount of fuel added at the beginning test to reveal the burn rate for the 3 cycles of testing.
3. In addition to the test protocol outlined below there was a 1 hour clean out cycle after the baseline tests were conducted that used the BestLine fuel additive premixed with the fuel. This clean out cycle was performed to prepare the engine for the second round of testing and to ensure better accuracy and stability of the test. This clean out cycle was run at full power and load.

Fuel Burn Test   time   RPM
Idle / no load   20 minutes   650
Full speed with LB fan only   3 minutes   1800
Full speed with LB @ 200 kw load   2 minutes   1800
Full speed with LB @ 200 kw load   20 minutes   1800
Full speed with LB @ 200 kw load   20 minutes   1800
Full speed with LB fan only   5 minutes   1800
Idle / no load cool down   3 minutes   650
Engine shut down   1 minutes   0
Total time for each test   74 minutes    


Average with no fuel additive   Average with fuel additive
225 gallons of fuel added   150 gallons of fuel added
110.8 reclaimed   48.7 reclaimed
114.20 Burned   101.30 Burned
Performance Results   11.30 % decrease in fuel consumption

Participants :
Owen Charles: CD and Power technician.
Marcos Jetmore: CD and Power technician
Perry Anderson: BestLine Lubricants VP Sales.
CD & Power, 150 Nardi Lane, Martinez CA 94553 ph: (925) 229-2700 

CD & Power


engine and fuel treatment for diesel