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Originally Posted by scruffboy
Has it been a while since you changed the oil? If you have let it go for too long gasoline will get into the oil, that's why it's best to change it as often as possible.
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Some wwill argue (like Democrats & repulicans), but if you are using petro oil, change it every 3k miles. Synthetic could go 5-6k miles.
Gasoline (raw, unburned) will slip past the ring gaps, and dilute the motor oil. Just a fact of combustion engines.
Also, if the engine has over 100k on it, and has some oil loss issues, like burning it or leaks, I recommend using 20w-50 oil to slow down the oil consumption, and to fill in the increased clearances on the parts due to the normal wear incurred over those 100k + miles. (All 1 sentence, that made sense)