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.
Half a quart should not be a problem. Too much oil lets the crank bearings splash in the oil and not cool well. I am an aircraft mechanic and tend to follow the manufactures instructions explicitly and would drain the excess half quart. Good luck!
This is an older thread, you may not receive a response, and could
be reviving an old thread. Please consider creating a new thread.
Ford Mustang Forum
A forum community dedicated to Ford Mustang owners and enthusiasts. Come join the discussion about performance, builds, modifications, reviews, engine swaps, classifieds, troubleshooting, maintenance, and more!