On Mar 9, 4:26=A0am, "-->> T.G. Lambach <<--" <"T.G. Lambach at
NoHamorSpamcomcast.net"> wrote:
> Diesels have the problem you describe. The question is how much lube oil
> is consumed this way? A liter per 1,000 miles isn't nice but acceptable.
>
> Basically too much air volume is blowing out of the crankcase and
> carrying with it lube oil mist. Why is that happening?
>
> If your motor has done say, 250,000 miles, it could need new rings.
>
> Older diesels exhausted their vacuum pumps into the motor so a vacuum
> leak somewhere in the car supplied such excess air. Does your motor (a)
> have a vacuum pump and (b) if so does it vent into the motor?
>
> Finally, is the engine's lube oil level BETWEEN the notches on the dip
> stick. Some shops overfill and the excess is blown UP the air oil
> separator's drain tube on hard acceleration (my experience).
>
> Hope these thoughts help.
> --
>
> =A9 2008 T.G.Lambach. Publication in any form requires prior written
> permission.
Thankyou for your reply. I'm not too sure how much oil it's using -
I've had the car for a year and it certainly hasn't been using
anything like a liter of oil per 1000 miles in the past, but recently
it overheated (nackered water pump impeller) so I've been doing a bit
of work on the cooling system. Actually, I took it to a garage (non
MB) and they replaced the waterpump and thermostat but it still
overheated. After much mucking about with it myself, I tried turning
the themostat around and it now runs at normal temperature... In the
meantime I'd nackered the radiator with radflush so it got renewed
along with ATF cooling pipes, ATF etc...
As part of this, I cleaned the air pipes while they were off and after
a few short runs (to test ATF level) they are dripping with oil again
inside. I hope the car isn't using more oil than before but will have
to wait to be sure.
Haynes suggests that it does have a vacuum pump - I'll have to do some
more investigating.
I maintain it myself so the oil is at the right level
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