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Too much oil added (7qt's) during previous oil change

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    Too much oil added (7qt's) during previous oil change

    I was speaking with the previous owner of my car this past weekend, giving some updates on what has been done and planned projects and he brought up something I wanted to ask the boards here.

    Before I purchased the car he had taken it into an indy shop for an oil change, which was 16-miles from his house. He drove the car back with no issues but like many E46 M3 owners, he constantly checks the dipstick. Well when he checked it, it was over filled with oil. He ended up draining the extra amount and that came out to a little over a quart. I have to assume the car had about 7 quarts of oil for those 16 miles that he was driving.

    Reason why I'm asking is because I took the car for a little spirited driving through Calaveras this weekend and when I parked it for some photo's, I noticed what looks like thin vapors coming from the exhaust tips. They weren't the classic thick white (coolant) or blue (oil) but it was more white if anything and dissipated quickly. What are the problems associated with filling up the S54 with too much oil and driving for about ~16 miles one way?

    #2
    Not sure 1qt overfill is enough to cause this but when overfilled you will get air foaming in the oil reducing its effectiveness.

    Also be aware that the dipstick should be checked after warming engine and turning it off, waiting 60 seconds, then checking it.

    Oil level will appear overfilled if you just check the oil level cold or letting the engine sit for too long.


    Sent from my iPhone using Tapatalk
    Last edited by eacmen; 04-03-2023, 08:15 PM.

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      #3
      I don't think the extra would hurt anything.

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        #4
        Ok that makes me feel better, thought seals may be sensitive on this thing. After telling the PO I had done the head gasket, refreshed a lot on the car he mentioned the overfilled oil and if I addressed it so I'm glad I asked. Thank you for the replies.

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          #5
          I wouldn't think twice about it.
          '09 HP2S, '12 R12GSA, '00 Black 323iT, '02 Alpine 325iT (Track Wagon), '02 Alpine 330iT
          Instagram @HillPerformanceBimmers
          Email to George@HillPerformance.com

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