Question about 2003 Honda Civic

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I accidently put antifreeze instead of oil in engine

Started and ran the car

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Drain it IMMEDIATELY!!! It could remove all of the protection your engine uses to keep it from wearing out. Be prepared to spend alot of money on oil to flush out the antifreeze! Also get a few oil filters! The first wash is CRITICAL....After you have let the engine drain OVERNIGHT, leaving the old filter off, Put back the drain plug and mount the new filter, and add the new oil. Run the engine until it is at operating temperature. Turn it off...drain it while HOT and pull the filter while hot (Use Gloves to keep from burning yourself). Let it drain overnight again. Repeat the process above running the car for 24 hours, then for 3 days, then for 1 week. After that last drain, you should be ready to see what damage was caused...hopefully not much if you didn't drive it too far...

Posted on Jan 13, 2013

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