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I have a 1979 Ford F350, C6 automatic. The transmission was rebuilt about 10,000 miles ago (truck has 70,000 orig). My question is about the transmission fluid. Now, I have read that new tranny fluid is bright red, mine appears to be a golden color, looks like brand new 10w-30 oil, it smells like ATF, but I don't think its burnt. Is it possible that this is a different kind of tranny fluid? Or is it the wrong kind altogether?
Darn...that thing is supposed to take Dextron II. You think I should call the shop (its there right now for other problems - Check it out 73-79 Forum - F350 Problem Child) and have them change it out?
I could swear that dexron and type F are both red. What about that mineral or organic stuff that the foreign cars use? I have not seen what that stuff looks like. I know that my friends 2000 ram takes this stuff. I guess that stuff is not cheap either. Any time an older type F tranny is rebuilt it should take Dexron/Mercon, or at least this is how it has been. I had a 77 C6 rebuilt and the shop owner told me why this is. I think it was something to do with the clutches. Type F will eventually be obsolete. Just like leaded gas and R-12. Who knows what will come next. Probably that expensive stuff.
Sounds like a good time to start buying a case a week from the local Napa. By the way, how can you tell if you've burnt your tranny fluid? Mine also is still red, but I know my tranny got a bit warm this weekend at the mud bog and just wanted to make sure I didn't burn anything up. I could put my hand on the cooler and filter (external kit from B & M) and could hold it there for a few seconds before it got too much for me to handle. Gotta get a fan for that cooler and a trans temp gauge is in the process...
There is an article in the most recent Popular Mechanics that shows you how to check your transmission fluid and how to change it. Thought this might help.