Guitar Jones
aka Angry Johnny
On a side note, the Ford C4 (very similiar in design to a 904) and the C6 (very similiar in design to a 727) are all Simpson designed gearset transmissions.
Little off subject,but I just replaced the fluid in my 4 spd car.Belive I had regular 90wt gear oil in it. The factory service manual says to use ATF. For the 833 a GL-4 oil is also needed for the soft (brass) syncros. GL-4 is becoming very hard to find. Ended up going with Red-Line MT-90 GL-4 transmission fluid,and boy am I glad I did. Feels like a brand new trans. Smooth shifting,no grinding, awsomeness !!!!
So, I am a firm believer in Red-Line oil. Look into it.
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?