I have an 1998 e 430 with electronic trans (no 4 matic). I v found the converter plug and wanted to drain, remove pan and filter and refill with same amount of dextron fluid.Dealer says not to change this fluid, EVER, unless there is a problem. He also told me it was special fluid at $17 a quart. I find its only dextron II trans fluid.Something here does not sound right.Could I ruin the trans as they stated? Advise please.
98 E430(sport), 99 ML 320 (sold) , 05 C 230(sport) Mark