Zoom Zoom, baby
- Central Virginia
- 2019 CX-5 Reserve
Actually, on the Cr-V forum they are claiming the opposite. UMRdyldo (yes, actual username) ran a bunch of logs that showed higher octane made the issue worse.
I've read the same thing regarding CR-Vs.
I cannot find any data on the web regarding the effect of premium gas on OD in engines that adjust their timing (or richness) based upon detected octane. There are a few articles on "Does premium gas help reduce OD?" in general, but we're really trying to see if the engine's timing (or richness) change affects OD, not the mechanism that caused such engine changes. In Mazdas, we're [obviously] only discussing the turbo.
I don't recall who here I've seen make the "premium fuel reduces OD in the turbo" assertion...more than once. I just searched and can't find his comments. I'd start a new thread specifically to discuss this, but absent specific lab tests & data, it's all conjecture.