I did a search about what ATF to use, which only brought up various transmission questions, but none specific to my question.

I need to change transmission fluid, and wondered what kind to use. Seems to me that I used MB fluid last time, but I called for a price, and it's something like $13 litre, and needs 8+ litres!! Something tells me he gave me the wrong price; Dextron III is only $12/gallon or so.

My backyard mechanic told me if it says Dextron anywhere on the dipstick, I could use that Dextron III, but I don't see that on there.

Synthetics are $40/gallon, and the manufacturer recommends they be changed, at the same intervals as what your manual states, probably to protect themselves from a car owner saying it was the fluid that messed up their transmission, not them peeling out and squealing rubber at stop signs.

I'm sure Dextron III is fine to use, but wanted a concensus.

Thanks,

jeff 1991 300d