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240D's have more blowby? than 300D turbo's?
with the oil filler cap removed, I notice my 83 240D has a lot more oil blowing out of there than my 83 300D turbo. Also, the cap jumps around a lot more on the 240D. I looked at another 240D and noticed the same thing.
I assume the 300D turbo has lower compression ratio being a turbo. Could that account for the difference in blowby? My 240D runs great otherwise, very peppy, exhaust looks clean & does does not smell of burnt oil. no smoke under hard acceleration. Are there other tests that I can try?
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85 300D turbo pristine w 157k when purchased 167,870 July 2025 83 300 D turbo 297K runs great. SOLD! 83 240D 4 spd manual- parted out then junked |
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