Upper engine cleaners are hit or miss, I wouldn't write off a chemical solution just yet. High detergency diesel oil over a period of a few thousand miles has a much better chance at breaking down deposits.
Rotella T6 is an excellent oil for these engines in general. It will help clean up any deposits that may be present and will prevent any additional deposits from forming.
Still have problems, read this, I swear by it.
https://xoutpost.com/bmw-sav-forums/...-problems.html
I am still waiting to hear back from compression and leak down tests will post results.
I have not had luck with this car but it doesn't stop me. I brought it to a shop to have tested. the rear wheel has been seized from it sitting and the guy made me tow it to another shop they got the wheel unseized so the cars coming back to Toronto to go in my garage here so I will actually have the time to work on it. hopefully going to get the engine back together so this shop can run the tests for me.
engines back together after months of research I've finally decided to just tear down the engine and re do the rings with the M52 oil control ring, and replace the valve seals at the same time. I will most likely start a new thread for the tear down and will link in this thread. Thanks again guys for all the help.
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