190E transmission

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JOHN CRAIG - 20 Dec 2004 03:50 GMT

When I take my 1987 190E in (to a non-Mercedes service garage) for
servicing, it always comes back with ~0.5 L transmission oil added.
When I check the levels (with the engine hot, and running) the
transmission oil is way too high. Previously, I've always siphoned
some oil off, to get it at the right level.
From the manual, I gather too much oil is bad?
I wonder why the levels can't be checked with the engine cold?
Regards,
John

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Karl - 20 Dec 2004 04:43 GMT

ATF expands when heated. If you check it when cold, it should be about 5mm below the add mark. At
operating temp, it should be between the marks.

> When I take my 1987 190E in (to a non-Mercedes service garage) for
> servicing, it always comes back with ~0.5 L transmission oil added.
[quoted text clipped - 5 lines]
> Regards,
> John

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JOHN CRAIG - 23 Dec 2004 03:07 GMT

What you say corresponds with what it says in the Mercedes instruction
book. It says that after filling to between the marks when hot, the
level will *drop* on cooling the engine. It warns against adding
more oil when cold.
What I find is quite the opposite. On cooling, the level is about 1cm
higher than the full mark. On heating the engine up and rechecking,
the oil is between the two level marks.
I wonder if anyone has commented on this before?
John

>ATF expands when heated. If you check it when cold, it should be about 5mm below the add mark. At
>operating temp, it should be between the marks.
[quoted text clipped - 8 lines]
>> Regards,
>> John

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