transmission flush - will those flush machine do the trick? - PeachParts Mercedes-Benz Forum

hk20000 · #1 03-26-2007, 06:23 PM

interesting.

1989 Toyota Cressida

drain plug on pan - yup
TQ converter drain - why do you design it so that you have to take the tranny apart to drain fluid?
filter - what?
it probably is the lack of filter that makes Toyota ask you to change tranny fluid every 2 years or 50,000km at best. Flushing does the tranny good.

1992 BMW 525i

drainplug on pan - yup
TQ converter drain - this guy says no.
filter - yeah it's there somewhat.

no idea about the service life... sold it before i even get to find out.

Never heard of these items getting replaced at all from all the AT cars I've owned. But there is no such thing as a trusted Mercedes Indie around my area - any shop that actually hoists up the car and take it apart like to rip off Mercedes owners because - well it's a Mercedes it's just bound to be horrid to repair, they think, and I agree with them most of the time, unfortunately.

meh I'll just drive around keeping the fluid at the right level and test Mercedes about their "Fill for life" claim.

and save up for a proper dealer fluid service later.

TimFreeh · #2 03-26-2007, 07:11 PM

Quote:

Originally Posted by hk20000

meh I'll just drive around keeping the fluid at the right level and test Mercedes about their "Fill for life" claim.

and save up for a proper dealer fluid service later.

Good plan but your car should have a 722.423 transmission - which is a 4 speed automatic and the factory recommended transmission service interval is 30K for a fluid and filter change.

benztech13 · #3 03-26-2007, 08:15 PM

You get what you pay for at jiffy lube or somewhere like it. I have seen many butcher jobs come out of places like that. But I do know that the dealer is very pricey.

ozawa · #4 03-26-2007, 09:14 PM

do not under any circumstances let one of those tranny flushing machines anywhere near your car!

Hirnbeiss · #5 03-27-2007, 06:25 AM

Note that there are (at least) two kinds of flushing machines: one just exchanges the fluid via the cooler lines, which shouldn't cause any problems, and the other uses air pressure to also "agitate the fluid" and "remove dirt". I think shooting 100# air into your tranny has a reasonable chance of dislodging more than dirt, and that's probably what causes problems. Either that or a "tech" who didn't hook up the machines correctly.