David - another good reason to drive a Benz! Actually, I would be concerned
with what the shop was using to "flush" the transmission system - if it was
virgin fluid of the same type that is required for operation, fine - but if
they are using something like a solvent or el cheapo oil, perhaps not
carefully handled, then I still think that flushing can do more harm than
good.
After all, when you change the engine oil in an M-B, you always leave some
of the old oil in the hoses and cooler system, so that there's possibly some
of the original break-in oil in the engine after 200k miles, albeit an
insignificant amount. Doesn't hurt the engine in practice, so my opinion is
that changing filter and more than half of the transmission fluid is still
safer than mixing in some unknown "stuff".
Werner
----- Original Message -----
From: "David Brodbeck" <[EMAIL PROTECTED]>
To: "Mercedes Discussion List" <[email protected]>
Sent: Monday, February 05, 2007 5:31 PM
Subject: Re: [MBZ] Luckiest man in the world!
Werner Fehlauer wrote:
Sounds like another good reason NOT to give extra $$ to a shop to "flush"
a
transmission. Other than a good "profit maker" for the shop, a flushing
process can do more harm than good, since it can bypasses the built-in
filter system, and puts a fluid of unknown quality in the system.
IMO, a complete drain of trans. and torque converter, change of filter
and
gasket, and refill with quality fluid should suffice. There's no need to
connect/disconnect lines and hoses.
True for Mercedes cars, but keep in mind there are many cars out there
that lack torque converter drain plugs. There is no way to completely
change the fluid in those cars except by flushing it.
