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Premium Member
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Discussion Starter #1
my bronco has a tranny leak, i have to add a pint every now and then. i dont drive it every day so i havent really worried about it. i was told to use type f fluid, then i read the other day in a manual to use dexron//mercon. is the type f going to cause any problems? ive noticed it doesnt downshift into 2nd when you slow down to make a turn. you have to manually drop it to 2nd. it will downshift to 1st if you come to a complete stop. should i drain it and refill it with dexron//mercon?
 

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Kitteh Commandaar!
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4,191 Posts
I don't remember, but type F is only for the older c6's, I think it is 80s an below. I know mine needs dex/mer fluid. Check the years for sure though...

Kc
 

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I'd change the fluid and filter. Check the modular valve on the back side of the tranny. If the vaccum line is porous or popped off it wont down shift properly.
 

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If the tranny has been rebuilt, go with the Dex/Mer as that's all the tranny shops ever use and I'm told it's a better fluid. Otherwise, Stay with Type F even if you drain it because unlees you have a drain plug in the torque convertor, you won't get all the fluid out and you'll be mixing the two.
 

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Premium Member
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Discussion Starter #6
thanks for all input, but i dont know what was in it before, and ive been putting f in there and if it had dex/merc in there then they are already mixed. i realize i'm not going to get all of it out because of the converter but it probably needs to be changed out anyway i dont think the guy i got it from was real good with the maintenance
 
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