gear oil

[macdstr8up]

my friend wants to do a gear install like i did in his 98 cobra and switch to 4.10s, i used royal purple in my 96 with the friction modifier but he wants to just use mobil 1 synthetic w/o the friction modifier, i think this is a bad idea but he wont listen to me lol, i had to order my gear oil cause no one around here sells royal purple. I think thats why he just wants to use the mobil 1 w/o friction modifier. Hes doin the install tomorrow with me and my uncle, what do you guys think will this work? I dont want to help him install it and then his gears fail, esp on a cobra.

 

[97gtdroptop]

I dont understand why he would take a chance.Its a big job.Do it once and do it right.This is a job you dont want to cut corners on.

 

[csledd]

is the Royal Purple the best stuff out there? I'm ordering my gears tomorrow and I was curious as to what all I needed to order with it to be ready to go!!

 

[macdstr8up]

i dont know about best i havent had any problems, but maybe i should say 1 of the best.

 

[Mustang5L5]

Just go to Ford and buy a bottle of friction modifier. It's $3 a bottle.

Then he can add it to whatever oil he chooses to buy.

T-lok rear ends need friction modifier or they will chatter around corners.

 

[dollarbill]

I recently read the side of a Royal Purple bottle of gear lube and it says it has friction modifier already. Would it screw it up to add more?