1990 Automatic Transmission
#1
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Join Date: Dec 2007
Location: High Point North Carolina
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1990 Automatic Transmission
The sticker on the door of my 1990 F150 has an "E" indication in the spot for Transmission. Does this indicate an E40D Transmission?
#7
Senior Member
My transmission shifted poorly with cheap fluid. I tried cheap fluids twice. Same poor performance came back after about 3,000 miles each time. When I upgraded the fluid to some real stuff, it shifted smoothly. I now use Valvoline Maxlife in my transmission. I hear that Castrol High Mileage and Mobil 1 ATF works good in our trucks as well. One thing I do know and that is that my truck did not like cheap fluid at all.
Just my 2 cents.
Just my 2 cents.