mud-digger

i just did a 5 speed trany swap in my 92 f150, it came out of a 94 f150 same motor same everything, but what kinda transmisson fluid do i use i had some one tell me that they take auto trany fluid, but then some say it take gear oil. now from my exsperience with manuals they have always taken gear oil.

Just call me Sean

iTrader: (1)

Dextron/Mercon III automatic transmission fluid. DO NOT use gear oil.

mud-digger

wow i would have never though of that all the manuals i have ever had or worked on have taken gear oil. thanks.

mud-digger

why not gear oil just wondering like what would it do.

Just call me Sean

iTrader: (1)

The parts will wear faster, it will be noisier and it will be harder to shift because the gear oil is too think to lubricate everything properly.

BillyBobFord97

because Ford says not to put gear oil in

mud-digger

alright got ya. lol. ya never had one like this lol. so figured i'd ask glad i did. lol.