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extra oil in rebuilt 6 cylinder

850 Views 6 Replies 6 Participants Last post by  DrVett
I just had a rebuilt 6 cylinder put in my 1966 Mustang. The shop put 5 qts of oil in rather than the specified 4.5 qts. I didn't notice until I had driven it 500 miles. I took it back for some final things that weren't done the first time. I mentioned that they put too much oil in. After they changed the oil again, it is again .5 qts too much. Will this damage the engine? I plan on draining the extra .5 qt if it is a problem.


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Ive actually measured the distance that the crank goes down into the pan and the distance the oil goes up at the full mark and there is a good inch of space between the two. If you also understand that this measurement is only accurate when it isn't running then the distance between the two gets bigger because the oil that is running through the engine is up in the crank,block and head and is returning to the pan. I have run an extra quart in my 65 200 making the oil level about 1/2 inch higher up the stick than full during the summer here in Texas. It helps the engine stay cooler and reduces oil breakdown along with keeping the oil pressure a little higher. I'd leave it in.
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