Anyone know the transmission model number on a later-year 1996 S420? It's an auto, rwd.
I'm thinking of changing the ATF fluid/gasket. Anyone know if there is an equivalent aftermarket replacement to the MB ATF for this model that's cheaper?
The transmission code is also in your manual, on the sheet that is glued to inside of your back cover.
My transmission is 722.508. From searching on the web, it seems that the 722.508 was the last of the "vacuum controlled" transmissions before the introduction of the "electric transmissions".
It seems (though I'm not absolutely sure) that the "electric transmissions" use the special MB fluid. And the earlier "vacuum transmissions" use Dexron.
The reason I say I'm not sure what fluid to use, is that I read on the web that my 722.508 (vacuum?) should use Dexron, BUT the local mercedes service shops say I need the MB fluid.
I suppose one way to find out which fluid is currently in your transmission would be to check the color of the fluid from your dipstick. I believe that all Dexron fluids are RED (not absolutely sure however), and the MB fluid is yellowish color.
Now, does anyone know if the MB fluid can be used in place of Dexron?
Vehicle: SEC 600 COUPE (RHD) One of the chosen few.
Location: Leicester UK
Posts: 1,341
RE: Transmission model number? Fluid?
Mummy knows best, stick with MB tranny fluid , it has a different makeup to dexron and stay with the MB filter, coz its too expensive to be a guinnea pig.
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FYI, I talked with Caliber motors and clarified the correct transmission fluids to use:
722.5xx (5-series) transmissions all take Dexron-III fluid. All 5-series transmissions are vacuum-controlled. Also 5-series transmissions have a dipstick.
722.6xx (6-series) transmissions all take MB Synthetic fluid (expensive fluid). These are the "electronic transmissions". They do NOT have a dipstick.
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