Klutch
Well-Known Member
- Joined
- May 25, 2019
- Threads
- 18
- Messages
- 816
- Reaction score
- 1,006
- Location
- Colorado Springs
- Vehicle(s)
- 1986 Jeep Comanche, 2000 Jeep Cherokee
Yep, regular is 85 octane here in Colorado. It works just like 87 octane at this altitude. I've never heard any pinging at all from my Gladiator.https://en.m.wikipedia.org/wiki/U.S._State_Fuel_Octane_Standards
Colorado, Utah, Wyoming, South Dakota (and sort of Montana). It’s an altitude thing.
FWIW I only knew to run 87 in my old XJ as a kid in Colorado because my dad specifically told me to, otherwise 85 was the norm for everyone I knew (broke HS kids). I’m not sure if I needed it but it was in the manual so I did.
Modern, fuel injected engines have knock sensors. If the engine is experiencing detonating/pinging/knocking, the sensor will cause the ignition timing to retard and stop that problem. While anything is possible, I think it's unlikely it was a knocking problem.
If a rod comes through the block on a new engine, it is most likely an oiling problem.
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