First Generation Explorer Gear / Differential Oil

[crivas13]

First Generation Explorer Gear / Differential Fluid ?

Hi,

I have a 2 Wheel Drive 94 Explorer with the D4 3.73 Axle, what kind of fluid do i use to change the rear differential fluid. The manual says Hypoid Gear Lubricant Part # XY-90-QL or E0AZ-19580-A Ford Specification ESP-M2C154-A. Whats the difference between the two. Is it synthetic or dino?

Thanks,
Carlos

 

[Alec]

Dunno about part #s, but Ford does have both synthetic and dino gear oil. The synthetic from the dealer is like $17 a quart, and you usually need about 2.5 qts. I think. The oil is something crazy like 85w140.

 

[crivas13]

Thanks Alec, i just found another Dead Link Removed that said i need Motorcraft SAE 80W90 Premium Rear Axle Lube. I think i will use Valvoline 80W90 Durablend and the 4oz of the Ford friction modifier. Will the Valvoline stuff be alright?

Thanks,
Carlos

 

[jimbo74]

carlos, you should be fine

 

[crivas13]

Well i finally got around to it and did it this afternoon. I got 3 quarts of Mobil 1 Synthetic 75W-90 Gear Oil $6.99 each at Autozone and used a suction gun. I had to use a smaller hose and kind of tape it to the suction gun because the hose wouldnt fit through the hole and past the gears. It was a pain. I also added the 4oz. of the ford friction modifier to the second quart as i was adding it. I have a quetions i've read that it usually takes about 2.5 quarts since its 5.3 pint capacity. But mine took all three quarts and it still didnt get to the spilling point. I put my finger in there and could feel the oil but i didnt overspill. Also i drove it around tonight and will check the level again tomorrow. Should i buy another bottle and add more until it spills?

Thanks,
Carlos

 

[aldive]

Originally posted by crivas13
. I also added the 4oz. of the ford friction modifier to the second quart as i was adding it.

With the Mobile 1, you did not need the friction modifier.

 

[crivas13]

Is having it in there gonna hurt anything?

Carlos

 

[aldive]

Originally posted by crivas13
Is having it in there gonna hurt anything?

Carlos

I do not know, nut I doubt it is harmful.

 

[AgExplorer]

The friction modifier will not cause any problems.