Quote:
Originally posted by AaronM
I'd say to try a small amount of 87 first, there is, after all, some variation between engines, even when mass-produced and age increases those variations. My dad had an Explorer with the Ford 302 V8, specs called for 87, but it would ping when hauling/towing with anything other than 91+, so we just always ran 91 (no-one could find any issues with the engine, so we just chalked it up to production variances).
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That is true. I may have to try a little bit once it's up and running again... ring and pinion went out. I have noticed one thing from experience though. After messing with a lot of honda and cadillac engines, i've seen instances where excessive amounts of fluffy (and hard) carbon buildup has caused a signifigant decrease in the combustion chamber volume... increasing the octane required to keep detonation at bay.
Driving around town at steady/low rpms will cause quite a bit of buildup.
Sometimes going WOT is actually good preventative maintenance.
