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Old 07-18-2012, 09:30 AM   #445
sonick
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Quote:
Originally Posted by SumAznGuy View Post
If they are running to low of octane, there could be some detonation damage on the piston top and combustion chamber. Pull out the plugs and take a look at them.

I've also heard that detonation causes unnecessary stress/wear on crank shaft bearings too.
Depends on the car, if it's newer it should have knock sensors and the technology to retard timing to prevent pre-detonation from occurring.
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2010 Toyota Rav4 Limited V6 - Wifey's Daily Driver
2009 BMW 128i - Daily Driver
2007 Toyota Rav4 Sport V6 - Sold
1999 Mazda Miata - Sold
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1990 Mazda Miata - Sold

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