Auto gearbox fluid
I am having problems with my 2000 Mercedes-benz C-class. At times, it seems as though the autobox is not changing up to fourth gear. It will rev up to 3000rpm before it changes.
I'm going to change the oil and filter and have been given five litres of Dexron ll. I was told to check if it's OK to use, but the Haynes manual and the Mercedes handbook both say to only use ATF. Graham Moore Dextron-ll is actually a registered trademark of General Motors and not a type of oil. It was introduced in 1972 and the specifications have been surpassed by later formulas. While using a Dextron Ill or lv would be acceptable, I would not use the Dextron ll in your gearbox as it can cause corrosion in certain components. In modern applications, it’s only for use in power steering systems.
Mercedes recommends using ATF (automatic transmission fluid). The specified ATF oils are: MB 236 15 ATF A 001 989 77 03, MB 236 15 ATF A 001 989 78 03, MB 236.15, Shell ATF 134FE, Shell Spirax S6 ATF 134ME and Fuchs TITAN ATF 7134 FE.