Fountain35

I'm taking my car to get the transmission flush/filter. The car has 90,000 miles. Debating whether to do the conductor plate while the jobs getting done?

PieRat

I'd say to do it. Also might be worth changing the solenoids toothen you only have to ever drain and refill it in future (60,000 km!)unless valvebody goes! All depends on your coin i guess but I think invest now and save later..I just replaced the lot when I was in there fixing a line pressure issue. Although I guess where you live the oil might be cheaper its 90 a little here!!

Honestly mate it's a really easy job all the bolts involved are a t30 e torx, torque wrench (all bolts are same torque) and 7mm deep socket.. jackstands as well. You probably want a mate to help hold the valvebody but I did it by myself lol.. let me know if you want instructions

MSG 55G

DIY trans flush, very simple. I flushed mine when car goes into limped mode and got speed sensors and slippage codes. It took care of the codes for a couple of months but then it came back again. So I ended up replacing the conductor plate; however, this is what happened when you don’t change ATF over 7 years. When I removed the old plate, speed sensors were filthy.

dustinN

What is the cost for transmission service at the dealer? My local MB dealer quoted me $577 + tax + shop supplies. It's crazy expensive.

Fountain35

Not sure to be honest.
I'm just busy and it's easier for me to drop off the car right now.

I will order this...

https://www.fcpeuro.com/products/cop...on-service-kit

tw2

I have done the conductor plate before. It was not difficult but it wasn't fun. The parts are very cheap in your part of the world so might as well do it. Those FCP kits are so easy.

Joseph~

Not knowing which transmission, if you have the 7 speed I would updrade to the newer oil pan design and newer filter design

I purchased a kit from FCP euro;
https://www.fcpeuro.com/products/mer...n-001989680310

Review the following;

https://blog.fcpeuro.com/mercedes-7-...-transmissions

The bolts on the oil pan are single use torque to yield bolts, they should be changed evertime or you risk breaking the bolt if you reused them.

Regards

Joseph~

Fountain35

E55 so no 7 spd.

Thanks though!

SICAMG

With 90k on her I would not flush it. Do several drain and fills to slowly wash out the transmission. There is a lot of grim and clutch dust that is everywhere in the trans and a nice slow clean out would be best. Then when fluid is clean replace the filter and she will be good to go.
A flush will just replace the fluid and then start cleaning everything off and load the filter. Drain and fills will take much more time and work but also you can do it yourself as there is a drain plug and fill tube on it.
Then every other engine oil change, drain and fill and keep fluid nice and red.

Exotic-metal55

If you have any of the service records from the past, it may help. The conductor plate may have been changed already and they may have updated the wire plug that can allow trans fluid up the wire harness into your ECU`s. Otherwise a simple fluid and filter change is good to keep up with.

Fountain35

Using this fluid?



https://www.fcpeuro.com/products/aut...ntosin-1088216

tlambert

Pentosin, isn’t that a cough suppressant ? Lol.

StarvingArtist

Nope! One swig and I coughed like mad.

Fountain35

Anybody use it?

Joseph~

FWIW,...............

I used this in the oil change I did in November on the 2007 R320, has 7 speed with 162,000

Used FCP upgrade kit for the 7 speed.

Will use this again, in a 2008 R320 I aquired.

Regards

Joseph~

Fountain35

Thanks for the reply. I have the 5 speed transmission. I can the Petosin 5 liter jugs locally.

Fountain35

I noticed there is a red cap on the transmission fill so I think it has been changed even though I don't see it in the records. Regardless, it is due.

dustinN

The kit from FCP using Pentosin. I'm not going to do the flush, just changing the fluid and filter. Since it's not a flush, there will be MB genuine fluid left inside, isn't it a bad idea to mix 2 different type of fluid?

tw2

It's fine. I seem to recall that MB fluid is pentosin, regardless they are all fungible and menscible.

dustinN

Reading on this topic, some said only dealer can do this job, some said it's an easy DIY. I'm confused.

PieRat

if you have star you can pump as much fluid out as possible for a full flush. without star you can drain the pain, get like half the fluid out and refill. drive for a bit and drain again and refill to try replace as much as the original fluid as possible. maybe repeat until it drains clean.

tw2

You can do a flush without Star but I can't imagine it is easy. You will need to undo the cooling hoses and circulate dirty fluid out while taking new fluid in with the engine running. I only ever do dump and refills on older cars, every 20,000km with filter change every second time.

For a full flush I would be happy to pay the dealer.

dustinN

I don't know if I need a flush a just fluid change. I had fluid changed at dealer 40k miles ago. I didn't see any transmission service record from previous owner or VMI,

tw2

What type of service did they do? It should have been a full flush but some of them do just drain and refill.

dustinN

Invoice said "Transmission service 722.9", not sure if it was a flush or just a drain & refill.