300d transmission oil change

[exploreint]

hi im geting ready to chnage transmission oil filter in my 1984 300d turbo, and i was thinking of puting a synthetic oil after that in it. any suggestions? should I or not?

[exploreint]

let me add.. i hvae 250k miles on it.. no leaks really.. maybe just few here and there by the gasket

[300SDog]

All transmission fluid's synthetic. Does one claim to be *more* synthetic than another?

[charmalu]

I have 336000 miles on the transmission. I changed it to synthetic at 330900 miles. I also replaced the K-1 kit, and filter. It shift smoother that it ever has. Is it the K-1 kit or the oil? I don`t know, but iam satisfied as to how smooth it shifts. I have no leaks.
Be sure to drain the torque converter also.

Charlie ☺

[exploreint]

Thanks Charlie... what is K-1 kit? I have new filter kit for it... and what/where is the torque converter?

[patbob]

Originally Posted by exploreint

Thanks Charlie... what is K-1 kit? I have new filter kit for it... and what/where is the torque converter?

Serarch "K-1 spring kit". Supposed to help with flaring on 2->3 shifts. A separate thing, not part of the typical filter/oil change. Only do the kit if you have the flare and have tried absolutely everything else first (or if you just don't want to have to go back in after you do try everything else).

TC is between engine & transmission. About half the drainable oil is in it. You have to turn the engine around until the drain plug lines up with the access hole in the bottom of the bell housing. Takes same allen as the transmission pan drain plug.