Mercedes 722.6 fluid advice please.

Joined
May 12, 2018
Messages
559
Location
England
Hi.
Just done a partial fluid change on my Jeep. It uses the german manufactured 722.6 transmission. I sent some old fluid for analysis.

Viscosity was fine with Viscosity @ 100°C (cSt) 6.07

Copper was high Cu - 335

As was tin Sn - 22

This has been flagged up as possible bronze issue.

Where are Copper, Tin an Bronze likely to be in an Automatic Transmission. I am pretty sure that by 2008 the 722.6 were using bearings and not bushings.

The Transmission runs perfectly. I am just curios as to where the wear metals are coming from.

The fluid i put in was Revenol ATF+4. It is an approved and licensed product by Chrysler.

Any observations would be helpful please.
 
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