What Trans Fluid Do I Need To Use In 90 300e 124?

You Need To Use DexronIII/Mercon.
Gilly

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Dexron 3 ATF fluid is for your Trans.

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MB STARS Master Guild Technician,17 years MB tech
14 years independent shop owner

Todd, MB list 13 specific brands of Dextron III fluids you can use. The most common being Quaker State and Penzoil. Contact MB and request a copy of the Approved Service Products List. You will see which fluids/grades them call for.

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1999 MB SL500 (110,000 mi)
2004 Volvo V70 2.5T (220,000 mi)
2014 Tesla Model S 85 (136,000 mi)
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