The Fast and The Fuel Test

In 2009, BG purchased a 2010 3.5L Ford Taurus SHO with an EcoBoost™ twin-turbocharged direct injection V6 engine. BG was one of the first in the nation to receive this car, which, according to Ford, “has higher performance, better fuel economy and fewer CO2 emissions” compared to a naturally-aspirated engine.

But, we weren’t in it for the bragging rights; Ford’s pride and joy was to be our newest test vehicle. We named her Dottie.

Now, the fuel test has ended. Let’s take a look back and see what we’ve learned.

60,000-mile test
For the first 30,000 miles, we did not add any BG products. Every 5,000 miles, our pros performed an oil change, collected fuel system data using a scan tool, intake photos and performed a fluid system analysis. For the second 30,000 miles, we introduced BG products.
Basically, we wanted to educate ourselves on this twin-turbocharged direct injection engine so we could provide the best solutions to the automotive market.
To sum up our results, “Dottie has great acceleration power… as long as the engine is clean,” says Dustin Willhite, Director of Technology.

Even at the first check-up (5,000 miles), borescope footage showed intake valve deposits forming. At each subsequent check-up, we noticed deposit buildup continued in the intake valves and intake ports. There was heavy deposit contribution from PCV gases.
By about 15,000 miles, our drivers noticed a loss of power. Fuel dilution started at 10,000 miles and occurred in every check-up until 40,000 miles.

At the 30,000-mile service, our pros performed the BG Direct Injection Service and added BG 109 and BG 44K,® Part No. 208. Results of the service were 8.2 gain in horsepower and a whopping 20 ft. lb. gain in torque! An evident acceleration improvement was duly noted by our drivers.

Additionally, our borescope videos showed BG 44K® cleaned up piston top and injector deposits.

The results are in
Near the end of the test, at about the 55,000-mile point, our pros started noticing more performance issues.

The conclusion from the two-year test was that BG 44K® can help keep performance high (combustion chambers clean, injectors clean), until deposit formation on the ports/intake valves built up enough to affect airflow.

“Until design improvements address the negative contribution made by crankcase vapors (which create intake deposits), Direct Injection (DI) engines will continue to have intake deposit buildup issues. DI simply lacks the necessary and traditional fuel rinsing afforded by indirect injector spray. The high heat environment experienced by the fuel injector tip is also a major contributor to driveability issues,” says Dustin.

Solutions that specifically address reducing PCV vapors (engine oil evaporation) would be a welcome advancement by the manufacturers of DI engines. A combination of full synthetic, low volatility engine oil, combined with reasonable drain intervals would be one way to decrease these intake deposits. Dustin continues, “If DI is here to stay, then classical methods of engine ‘keep clean’ will need to be re-vamped to ensure trouble-free engine durability and performance.”

55,742 miles

Performance Analysis
No change in performance since the last check up.

Oil Analysis
With 6,742 miles on this oil drain, we see signs of increased oxidation levels and viscosity increase. It appears that as the engine continues to increase in mileage, the oil is under more stress during the drain. (Some of this may be due to the excessively hot weather we had during this drain.)

Borescope Analysis
See photos below.


49,000 miles

Performance Analysis
Power and acceleration remain strong. Our drivers are not feeling any lag or power issues like we did during the first 30,000. We attribute this primarily to the use of BG 44K®, which is keeping the injectors clean (good injector function/spray) and combustion chambers clean.

Oil Analysis
We don’t see anything to comment on for the fluid analysis reports. Still no fuel dilution, which is good. This could be due to two things. One would be clean injectors allowing for good fuel spray. Two would be ring land cleanliness. And, we take full credit. BG MOA® contributes to ring land cleanliness. Good ring function allows for minimal fuel dilution down into the engine oil.

Borescope Analysis
See photos below.


Our pros ran the borescope at 49,000 miles and then poured in BG 44K® and drove it 2,500 more miles. The after pics are from 51,446 miles.

Before BG 44K® (left) and after BG 44K® (right)


44,043 miles

Performance Analysis
No change in performance.

Oil Analysis
For the first time since the 5,000-mile checkup, there is no fuel dilution! All other fluids are protecting as they should be and our technicians ran another can of BG 44K® through a tank of gas for optimum protection.

Borescope Analysis
As you can see, the deposits are starting to build up again on the intake port walls and on the back of the intake valves. We expected this to happen because, in a Gasoline Direct Injection engine, fuel is sprayed directly into the combustion chamber and bypasses the intake port/valve area.

Before BG 44K® (left) and after BG 44K® (right).


39,160 miles

Performance Analysis
Our drivers haven’t seen a change in performance since the boost in horsepower and torque at the 32,000-mile Dyno Test. MPG is still averaging about 18.9.

Oil Analysis
All fluids are protecting as they should be.

Borescope Analysis
At the 32,000-mile checkup, we cleaned the fuel system with BG 44K® and performed a thorough Gasoline Direct Injection Service with visible borescope and noticeable performance results! In just 7,000 miles of driving, deposits are already starting to build up again.

In fact, when our technicians were evaluating the BG Fuel Test Car, they noticed major deposit accumulation on the piston tops and around the fuel injectors. Per our current test protocol, we ran a can of 44K® through a full tank of gasoline. See the before and after photos below.


36,726 miles

Since the Dyno testing at about 32,000, the BG Fuel Test Car has been cruising smoothly. Check out the latest results from the 35,000 mile check-up below.

Performance Analysis
Since the services performed during the Dyno testing, we’ve noticed a quicker throttle response and improved torque.

At 36,726 miles, fuel economy was recorded at 18.9 miles per gallon.

Oil Analysis
Fuel dilution is still present in the engine oil.

The Fuel Test Car has hit the road again and the 40,000-mile oil change won’t be until 2011.

Happy holidays!

This car put BG products to the test!

Around 32,000 miles, we took the BG Fuel Test Car to Wichita Dyno for some true test results in horsepower, torque and turbo boost.

Below is a selection from 40 total Dyno pulls. As you’ll see, we didn’t post the results for the turbo boost. It’s because the car has maintained proper turbo operation since we bought it last year.

We started with preliminary tests to get a base result with no BG Products in the vehicle.

Pull No.TreatmentHorsepower (hp)Torque
(Ft. Lbs.)
9Without BG Products288.3279
13Without BG Products288.3279

Then, we performed a BG Engine Oil Service with BG 109 Compression Performance Restoration. See the results below. We saw a 1.6 gain in horsepower! Torque remained the same.

Pull No.TreatmentHorsepower (hp)Torque
(Ft. Lbs.)
14Performed BG Engine Oil Service289.9279

Next, we added BG’s premier fuel product, BG 44K®, to the fuel tank and drove through a full tank of fuel. This is where it starts getting interesting. See the before (left) and after (right) photos of the injector tip and the bottom of the valves in Cylinder 4.

Cylinder 4


Note the results (below) after the BG 44K® cleanup: A noticeable 2.8 gain in horsepower and a 8 ft. lb. gain in torque!

Pull No.TreatmentHorsepower (hp)Torque
(Ft. Lbs.)
22After BG 44K® cleanup292.7287

For the final shebang, we performed a complete Gasoline Direct Injection Service and added BG MOA® to the engine. A full BG treatment gave the Fuel Test Car a total of 8.2 gain in horsepower and a whopping 20 ft. lb. gain in torque!

Pull No.TreatmentHorsepower (hp)Torque
(Ft. Lbs.)
34After the GDI Service and oil change with BG MOA®296.5299

Check the before (left) and after (right) of the valves in Cylinder 3.

Cylinder 3


The BG Fuel Test Car’s primary driver remarked, “Wow! You can feel that in the seat of your pants!”

Starting with the 35,000-mile oil change, we will be adding BG 44K® to fuel tank and BG MOA® to the new engine oil at each 5,000-mile interval. No other BG services will be performed unless necessary.

29,566 miles

The BG Fuel Test Car just completed the 30,000-mile check-up. Check out the latest results below.

Performance Analysis
One driver mentioned that the car has, “a slightly noticeable, but steady decrease in the car’s throttle response.”

Fuel economy – as read from the onboard calculator – is at a firm 18-20 mpg, which is still 4-6 miles per gallon less than when we drove it off the lot just over a year ago.

Borescope Analysis
Deposits continue to thicken, especially on port walls and just above the valve seat area as demonstrated in the photos below.

Oil Analysis
Fuel dilution is still present in the engine oil at a high enough level to be considered abnormal.

With just over 30,000 miles, it’s time to begin testing with BG products. Our BG R&D lab, with Wichita Dyno LLC, will run a series of tests before and after BG products over the next few months and publish the results right here!


25,536 miles

California, South Dakota, Texas, Florida and every where in between, the BG Fuel Test Car has racked up some windshield time. When she’s not traveling the country, the Fuel Test Car is running errands around Wichita to experience a little more stop-n-go city driving.

Our BG professional technicians changed the oil and performed the fifth checkup this year. The results are below.


Performance has not changed in the past 5,000 miles. The fuel economy is also holding at about 18-20 mpg.

Borescope Analysis

You can see in the videos below that the deposits continue to get thicker on port walls and valve stems and are forming to point of sticking out away from the port walls (Note the first photo of the Cylinder 1 valve seat area at bottom of the port).

Oil Analysis

Our tests are still showing fuel dilution in engine oil but not quite as much as the last couple of check ups. This might have been due to a shorter drain interval.