Transmission

[James Blyth]

Hello gents ,should you change transmission oil on 2003 eclass 320cdi with 89000 miles , car runs fine on test drive just would like your opinion and do you need to buy a kit ?

 

[LostKiwi]

Gearbox oil should be changed every 40k miles or so. You should also change the filter
MB in their wisdom used to proclaim the gearbox was "Sealed for life" but their interpretation of 'life' was till it was out of warranty or broke, whichever came last.

 

[Wighty]

Sealed for death

 

[Wighty]

Hello gents ,should you change transmission oil on 2003 eclass 320cdi with 89000 miles , car runs fine on test drive just would like your opinion and do you need to buy a kit ?

Is it 5 gears with dipstick tube in the engine bay buddy ?

 

[Wighty]

If it is , this is an example of the kit from MB , you can get it cheaper from eBay if you shop around but it gives you an idea
http://www.ebay.co.uk/itm/Genuine-M...ice-Kit-NEW-/111049658502?hash=item19db135086

 

[James Blyth]

Is it 5 gears with dipstick tube in the engine bay buddy ?

Its 5 gears mate but dont pick car up till next week

 

[Wighty]

Its 5 gears mate but dont pick car up till next week

If it has a red tab like in the picture , the atf may have been changed (or just checked ?) , the factory fit a black tab .

Any eBay search on 722.6 gearbox will bring up your gearbox .
The oil spec you want is 236.14 , again on eBay .
Post up some pics when you get the car

 

[James Blyth]

If it has a red tab like in the picture , the atf may have been changed (or just checked ?) , the factory fit a black tab .
View attachment 59350
Any eBay search on 722.6 gearbox will bring up your gearbox .
The oil spec you want is 236.14 , again on eBay .
Post up some pics when you get the car

Thanks mate will put pics up and check where you said when get the car ,cant wait love these old mercs

 

[Jim2]

If it is , this is an example of the kit from MB , you can get it cheaper from eBay if you shop around but it gives you an idea
http://www.ebay.co.uk/itm/Genuine-M...ice-Kit-NEW-/111049658502?hash=item19db135086

Thats not a bad kit Wighty, but he will need about 10-12 Ltree if he want's to do a complete change inc, TC.

 

[Wighty]

Thats not a bad kit Wighty, but he will need about 10-12 Ltree if he want's to do a complete change inc, TC.

Yep it’s ok , I didn’t really shop round for deals , just to give him an idea of what’s needed . You know the drill .

 

[James Blyth]

Wow that's a fair amount of oil

 

[Wighty]

Wow that's a fair amount of oil

About 7.5L in total , I think more is used if you are actually flushing things ?

 

[James Blyth]

Cheers for that mate

 

[Jim2]

Wow that's a fair amount of oil

Yes, but its not just draining the sump ( which holds Approx 4 Ltrs) there is also the TC and Oil Cooler + plus piping. To do a complete 100% fluid change, it will involve feeding new fluid into the system, while removing the old, which will involve a certain a mount of waste. Draining and the dropping the sump, replacing the filter and gasket, then refilling it is what you will get with the Kit Wighty gave you the link to, but its not a complete change. But then you will need to disconnect on of the cooling pipes and drain 2 litres from that. Replace the 2 litres, drain another 2 litres,refill...repeat until the new fresh fluid appears from the pipe. That's a complete change, but understandably, it takes considerably more oil.

 

[James Blyth]

Seems a big job aswell ,trying to find a decent garage up here that would fo that ,is it necessary to do complete flush to get benefit from changing oil?

 

[Wighty]

Seems a big job aswell ,trying to find a decent garage up here that would fo that ,is it necessary to do complete flush to get benefit from changing oil?

If you update your user details to show where you live buddy , members can recommend the nearest decent MB Indy who knows the job

 

[Jim2]

Seems a big job aswell ,trying to find a decent garage up here that would fo that ,is it necessary to do complete flush to get benefit from changing oil?

Yes, in my opinion, its the best job.....but some people just put the car on a lift / axle stands etc. open the drain plug, and leave it drain away , until no more comes out, then replace the drain plug, and replace the exact amount that drained out. This is the simplest form of a transmission fluid change. Effectively, its just like changing the engine oil in the car, but without the benefit of changing the filter.
Its not as difficult as it seems...I faced my first trans fluid change ( the full monty,,,Sump, TC, Radiator and pipes) with more than a little bit of trepidation,,,I read up on it, watched a few video's and jumped straight in. Its a case of if you have done it once, its no great problem after that. For future reference, if I ever wanted to just change and flush the fluid, I'd just disconnect the one of the cooler pipe's ( the one on the drivers side would be my preference ) attach a home made extension pipe to the cooling pipe, then with the engine running and the selector in "D" pump out 2 litres, and replace, repeat this sequence, monitoring the nr of ltrs that have been pumped out and replaced. Job done ( except for the filter ) Its a quickie option, if you did not have time to drop the sump and replace the filter and gasket.

 

[pgh13]

Also, while doing the filter, it's a good idea to replace the electrical connector bush, which can leak and allow fluid to pass up the wiring harness causing problems.

 

[James Blyth]

Thanks mate ,will do when get round to changing oil