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Car Forum / Mercedes-Benz Cars / February 2007

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smoke with 1993 300D 2.5 turbo

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cgunderm - 14 Feb 2007 01:25 GMT
Hi all,
just bought a 1993 300D 2.5 turbo, very nice car. only 155K miles. my
only doubt: it starts up perfect, even at 5F ambient temp., without
hesitation, then runs for about 2 minutes smooth, no smoke, and THEN
starts smoking, not very heavily, but quite a bit, idle gets a bit
irregular. smoke and idle stay that way until it’s up to operating
temp. Then completely smoke free and smooth idle. Good acceleration.
No gunk in water. Valves are a tiny bit noisy.
Any ideas?
Thanks!
Christian

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techgirl - 27 Feb 2007 04:12 GMT
What type of oil - petroleum based or Synthetic?  Amsoil, which can be
purchased through the internet or you can visit the website and find a local
dealer in your area, will clean up the sludge and gunk in the engine.

You may have to do another oil change after the sludge comes off and sludges
out the oil filter, but it will be worth it.  I did the same thing and that
Amsoil gave me better gas mileage and didn't tear up the internal parts of
the engine any further than they were.

It sounds like it has to burn off the crud before running smoothly.

Good luck.  It worked for me with a '99 E300TD+

>Hi all,
>just bought a 1993 300D 2.5 turbo, very nice car. only 155K miles. my
[quoted text clipped - 7 lines]
>Thanks!
>Christian

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