"In my 6.0L PowerStroke it was truly incredible. My first refill at the same station and the same pump, I hand calculated 19.5mpg, that's around town with some freeway driving, it's usually an average of 16mpg. Also the power and performance level increase with this product in your fuel is a whole new experience. When towing heavy trailer loads of hay last weekend my low end power had increased substantially. The exhaust tone of the truck was also noticeably cleaner sounding and all gauge readings were in the sweet zone."
Senior Moderator, TheDieselGarage.com
well turbo refused to rev and black smoke was everywhere
especially taking off with a load from a dead stop
after running 2 gas tanks with the treatment
the turbo was back again
i know it did not fix the turbo problem completely
but there is an obvious improvement
i will continue with the product and see if there will be farther improvements
Truck runs a whole lot smoother more power great product
This seems to do a good job of cleaning soot from the injection system, however it seems like it increases some numbers reported in the emissions test.
It's easy to deal with. I used to put AR6400D in the tank and run it for about 30 miles just before taking it in for the emissions test. I now just run AR6400D in the tankful of gas prior to taking it in for an emission test. I burn half the tank, then fill up again and run another 30 miles before taking it in for emissions.
The way I found this out (emissions are increased when AR6400D are added [to a full tank]), was when I had to do the emissions test 2 times, once it failed for EGR system issue, which I fixed and then re-tested it. The numbers were better on the 2nd testing, which is after I refilled the tank. You could say it was due to the EGR change I made, however, the change was simply to route the oil from my aftermarket EGR filter back to the crank-case, which can't affect emissions.
No really sure just what this fuel system cleaner does technically, all I can write about is the results I see from behind the wheel. 1-Have external 50 gallon tank which had problems with "noflow" message. Unit does not have a internal fuel filter. After using one application of AR6400-D the problem resolved itself. Can only assume the fuel system cleaner work. 2-Have notice an increase in acceleration. 3-Have seen a reduction in the typical Black Exhaust coming out of the tailpipe. 4-Increase in fuel economy. Using one bottle of AR6400 after each 5K oil change. Note am still using AR6200-D at each fuel fill-up in both internal and external tanks. Maybe a overkill.......