is mercon five o.k.

[tigmaned]

i have put a new tran pan on my 1986 vette with a 700r4 with a new filter. i got the car with 85K and have no idea when or if it was ever changed before? smell is o.k. just looks a little weak. so i did all this and put mercon-III back in it. but i say some mercon five in the stores and was wondering if any one knows how it will do in our older 700r4??

 

[Robertwav1]

I would stick with the Dexron 3. Ford forums say Mercon 5 is not backward compatible. I don't know if they mean with the older Mercon or not.

 

[tigmaned]

yeah your right, i put a new pan on with a drain nut so i plan on change it again soon to get more old stuff out and new in. not power flush here!

 

[Robertwav1]

Just did my trans filter last night. I didn't put that drain nut in like I was suppose to ... my fault ... Next year! I have a small refrigeration hand pump I use from the fill hole ... it pulls it out nice right from the bottom of the pan. No power flush here either!

 

[tigmaned]

with most of the ATF in the torque converter, i felt the pan with drain plug would ease changing out more ATF now. i but after more miles are put on i will still have to drain the pan for the another filter change. it took almost 5 quarts with the pan and filter change so i am thinking 4.5 quarts with just dropping the plugs this time.