There is a point in every shade tree mechanic’s life when the shelf fills up with bottles that promised miracles. I am usually skeptical. A noisy transmission in a 1931 Ford Model A Sport Coupe will teach you to listen closely, though, so I gave ProLube Oil Treatment a try.
I used it in my Sport Coupe and noticed that the transmission became quieter. That is the kind of result I appreciate in an old car: less racket means I can hear the engine, the road, and whatever new noise the Model A decides to make next. I also tried it in my modern car, where I noticed better gas mileage. I did not run a laboratory test or calculate a controlled before-and-after average; I am sharing what I observed behind the wheel.
I liked it enough to buy a gallon, and I plan to keep using it. The gallon on my shelf says more about my opinion than any polished advertisement could. When something seems to help both my old Ford and my daily driver, it earns its place next to the wrenches.
Product information
Read about ProLube Oil Treatment and check the manufacturer’s usage instructions for the correct amount and application. ProLube lists different treatment ratios for engines and manual transmissions and says not to use it in CVT transmissions.
