Gas in Oil

[BoureeOne]

Realized what cause some gas to get into my oil. Fixed it. I am running a really nice Royal Purple oil filter. It is new. Can I just remove it and drain the tainted oil out of it, replace it, do an oil change, and go to go. Or could the gas in the oil damage the filter?

Thanks

 

[doran4x]

Gas and oil will have separated with the gas on the bottom of the oil pan. Just drain the gas out. No problem.


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[BoureeOne]

Gas and oil will have separated with the gas on the bottom of the oil pan. Just drain the gas out. No problem.


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I am going to do an oil change. Just wondering if the filter could get damaged by the gas. New filter, fairly expensive. Engine is new rebuild. Is it better to be safe than sorry.

 

[bmc69]

Gas and oil will have separated with the gas on the bottom of the oil pan. Just drain the gas out. No problem.


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? I've always found that the gas mixes quite easily and thoroughly with the oil.

 

[doran4x]

I guess it depends on if you have run the engine long enough to emulsify the mixture. If the problem was noticed prior to running the motor then that wouldn’t happen.


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[Jfryjfry]

That would have to be a very expensive oil filter to make me consider reusing it if I suspected its integrity.

It would probably be fine, but if it is a brand new rebuild you should change oil and filter quickly anyway. Get a good affordable filter (bosch, mobil1, motorcraft, stp, wix etc) and be done with it

 

[Steve83]

Gasoline dissolves instantly in cold oil - WATER settles to the bottom, and gets emulsified by pumping & filtering. Neither damages the oil filter. Gas & water (vapors) normally enter the crankcase, which is why the PCV system exists. Gas can't stay dissolved in hot oil - it evaporates out very easily & quickly. Water takes much longer to evaporate out because it has to get much hotter, which is why it can cause damage to the engine bearing surfaces. Click this & read the caption:

(phone app link)


If you think more than ~1 cup of gas is in the crankcase, you should probably change the oil. If it's less, I wouldn't worry about it.