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TreeSemdyZee · 10-28-2010, 02:48 AM

Higher compression requires higher octane. Higher octane gas has a higher ignition point. If you use lower octane gas, it will ignite too soon, thereby causing pinging (pre-ignition).

10-28-2010, 02:48 AM	#5 (permalink)
TreeSemdyZee Premium Member Join Date: Dec 2009 Location: Kentuck-IANA Age: 60 Posts: 4,885 Drives: '09 370 & ‘14 Juke Rep Power: 27408	Higher compression requires higher octane. Higher octane gas has a higher ignition point. If you use lower octane gas, it will ignite too soon, thereby causing pinging (pre-ignition).