Originally posted by ODC:
Quick question, I've been filling up with 92 Octane here in Vancouver since I got the car (couple of months), do you think that's the reason for my wonky fuel mileage ?

The highest here is Chevron's 94 octane, maybe I should switch to that ... $1.10 / liter though .. ow


SVT or non-SVT

SVT's like the best standard grade premium you can find. (roughly 91-94)

The higher the octane the better the timing curve though the 00 models have an unfair advantage here with the infinitely better PCM & strategy.


Non-SVT's require 87 octane.
Sometimes 89 is required to stop detonation on older engines that have carbon buildup but it does not increase power or mileage. Actually it decreases both to run octane higher then the PCM is programmed for.

2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.