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I used to think premium fuel was a scam until my buddy explained compression ratios
My friend Alex who builds LS engines for fun told me my knock sensor was probably pulling timing like crazy on 87 octane. I laughed it off for like 6 months until I logged my IATs and actually saw the timing drop 8 degrees under load. Put a tank of 93 in my 2013 Mustang GT and the car felt completely different, no more pinging on hot days. Has anyone else had a tuner or mechanic talk them out of cheap gas?
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schmidt.willow9h agoMost Upvoted
Test drove my buddy's stock Toyota Corolla on 87 vs 93 for a week. Zero difference. Same mpg, same power, same everything. The ECU was happy on regular. Not every car is a high compression performance engine. You were driving a Mustang GT, a car engineered for premium. That's not the flex you think it is. Most cars on the road are econoboxes with low compression ratios and conservative timing maps. Put premium in a base Honda Fit and you're literally just burning money.
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noahpark9h ago
Is it just me or does this whole premium fuel thing feel like another way companies convince us to waste money on stuff we don't need?
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