ATF for MCT gearbox

[Gnasher141]

can anyone give spec for ATF for Speedshift gearbox and how many litres are required for filter and fluid change? Is it the blue fluid?

 

[Petrol Pete]

5G speedshift ? about 8.5 litres if torque converter and cooling system is drained properly.

 

[Gnasher141]

Hi PETE Thanks for reply

It’s 7G speedshift info i’m after 722.9 no torque converter

 

[grober]

DOES THIS HELP?
Service Information bulletin: Specifications for Operating Fluids for automatic transmission - WIS

According to this the gearbox fluid change is the same as for the torque convertor box the MC unit having separate drainage arrangement
MCT Transmission Service Fluid & Filter question - MBWorld.org Forums

 

[Gnasher141]

Hi grober

Spot on thanks

So depending on gearbox number it could be red or blue fluid. I know the 2 can’t be mixed. Any idea on capacity?

 

[grober]

I have heard 8-9 litres quoted see this thread.
https://www.benzworld.org/forums/at...ty-09e350-722-9-722.9-tranmission-service.pdf
from
Transmission fluid quantity 09e350 722.9. - Mercedes-Benz Forum
Its unclear if this includes the TC or not. Rule of thumb seems to be check what comes out on draining to get an idea.

 

[Petrol Pete]

Hi PETE Thanks for reply

It’s 7G speedshift info i’m after 722.9 no torque converter

I thought that 'box had a lock up torque converter ? ...anyone ??

 

[John]

I'm not totally sure which transmission is being referred to.

Speedshift MCT-7 has no torque converter - it has wet clutches and it is fitted to many AMGs (Multi Clutch Technology).

7G-Tronic does have a torque converter but is usually fitted to non-AMG models.

Same gearbox otherwise.