Type F fluid in 727

sbh126 said

One of my friends has a ford festiva that uses atf in a manual trans, I thought that was very bizarre. I never would have imagined my 4 speed would be the same. I still have 80 wt in mine but I've been planing on trying the atf thing. What kind of atf are you running? Do you notice it running any different when its cold/hot outside?

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Not to hijack,but since we are talking about fluids:

I dont run ATF. To me thats old technology. Having said that there are many who run atf in there 833's, and are happy with it.

I use Red-Line MT-90. It is a GL-4 oil, specificaly designed for 4spd trans with soft metals (brass syncros) like the 833. The trans now shifts 100% better. Its like I just installed a brand new trans. I'm sold on it.

The key for our old manual trans is GL-4 oil.
All the shelfs now have GL-5.......No good.
Must be GL-4.