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Switched our shop's 6.7 Powerstroke oil from a big name brand to a cheaper one for a year.
We tracked fuel economy on three identical service trucks and saw a 2% drop in mpg across the board after about 8 months. I'm starting to think the cheaper oil might be causing more internal drag or something. Is a small fuel hit worth the savings on oil, or are we actually costing ourselves more money?
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wood.faith1mo ago
Actually, the math usually works out the other way...
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spencer_coleman1mo ago
Honestly, we ran into the same thing with our fleet. That 2% fuel hit probably costs more than you saved on the cheaper oil. We switched back to the good stuff and the mpg came right up.
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