Auto gear­box fluid

Car Mechanics (UK) - - Help! -

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.

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