Cummins
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When we were originally approached by Rev-X about carrying their product line, I have to admit that I was skeptical. I told him that I would be happy to TRY it in my 2007 5.9L Cummins that I personally drove at the time, but wouldn't commit until I saw some definite benefits. We received the product on a Wednesday afternoon and placed the stocking order the next morning! Rev-X is that good. We run Schaeffer's full synthetic oil in all of our trucks, and many with balanced motors, and you can still notice a difference in how much smoother the trucks run and how much quieter they are with the addition of Rev-X. We feel confident in passing Rev-X on to our customers.
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