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Re: HOT WEATHER and octane Posted by Don M [Email] (#1349) [Profile/Gallery] (more from Don M) on Tue, 1 Jul 2008 10:36:55 In Reply to: HOT WEATHER and octane, TG, Tue, 1 Jul 2008 04:28:32 Members do not see ads below this line. - Help Keep This Site Online - Signup |
I've noticed that in hot weather both my 9.3 and my 9.5 ping when using regular grade, and sometimes even mid-grade, but the manual for my '01 9.5 differentiates between "knocking" and "pinging". It says a little pinging is normal and there is no need to upgrade. Heavy knocking, however, can be harmful and it means your engine "needs servicing" (whatever that means.)
posted by 64.12.11...
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