Transmission fluid
#1
Transmission fluid
Ihave a 98' f150 5.4 with E40D Tranny, Looking to change the fluid this weekend. I purchased Valvoline high mileage dexronIII/Mercon fluid with the lube guard in the red bottle. I'm getting conflicting opinions about using the dexIII/merc vs.MercV.If MercV is better because its a synthetic,why can't we use MercV in Mercron applications.Could be a stupid question, but I need to know.I want to use the best in my tranny.90,000 plus miles no problems.
#3
Bought my 97 Expy with E40D tranny with 83,000 miles. I immediately changed the tranny fluid to Amsoil Universal ATF which meets the Ford specs and noticed a fluid temp drop on my gauge. Shifts were slightly crisper but not like a shift kit or other mod. The mushyness between 2 and 3 shift was decreased but not eliminated.
#4