My 1983 300D has over 305K on the motor, so I know I can't expect it to be running perfectly as if it just left the factory. It has minimal to no blowby and doesn't use any oil (leaks are another matter...).

My smoke issue is pretty minor, I think, as the only time it's really evident is when I'm using more than 1/2 of the throttle. It seems to be a grey-ish smoke, and I really only see it at night when I have a person's headlights behind me. The ALDA on my car had already been fiddled with, so I didn't have any problem turning it down just a tad (screwing it in) to see if it affected the smoke, but it really didn't....just made the car a bit more sluggish.

Is this something I should worry about?

Thanks,

Joe

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1983 300D - 314,640 miles (not all by me) - Daily Driver --Sold--
1983 300d - 215,000 miles (approximately)