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PSA: That $60 fuel additive kit for my 6.7 Powerstroke did not give me the 2 mpg the counter guy at O'Reilly in Tulsa promised
I ran the full three bottle system for 4,800 miles because the parts guy swore his brother in law picked up 2 mpg on the same truck. My hand calculated numbers came out to 0.3 mpg better, which is basically noise. That $60 would have bought me two fuel filters and a jug of diesel kleen I actually trust. I changed my mind about additive kits after this. Anyone here actually seen a real gain from one of these, or is it all just marketing?
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kai_west12h ago
Thought those kits were legit till I tried one myself.
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