I’m a heavy duty diesel mechanic and this is the first time using this product and I just made a 32 hour trip from texas to Florida and noticed that I got better fuel mileage and more importantly that my engine ran better. It was noticeably quieter and just sounded like it was running smoother. I have a Cummins and I’m use to the louder motor but it was nice and quiet.

I bought some and put it in my 454 LS5 Chevelle just to try it. The engine runs much smoother and quieter.

Since then I put it in my Honda Accord and 6.7 Cummins Ram 2500. Very impressed with its performance.

I also bought some of the gun oil and really like it too !! My M1 Garand cycles like a new one.

Go ahead, give it a try. You’ll be glad you did.

My truck is a 1991 Ford F-350 Dually and has only 120,000 miles. I was skeptical of the comments, (maybe mommy, daddy issue?). Before adding Prolube I knew 15 gallons would only get me 140 miles in town. I followed the directions for the engine and transmission. It works, now 15 gallons is getting me 170+ miles. Next is an oil change and another round of Prolube. I’m ordering more for all our vehicles.