I bought a rear end at carlisle and I finally am out of school and get a chance to work on my car. What kind of gear oil ie weight do you run if it has 3.73 posi. Ps spools suck they make your tires go bad which makes you get pulled over by the police which get you a repair order or a repair ticket for 151 dollar tires erghh I hate maryland.

 

My manual says 80-90 gear oil and fords 4 ounce bottle of friction modifier.................Gary