c10 5.0L rear diff fluid

[79Scott]

Hey guys, was going to change my rear differential fluid over the weekend. What is the factory suggestion? 75w/90? and how much?

Thanks

 

[79Scott]

anyone?

 

[dvdswan]

75w/90 is fine but if you have a LSD you should put an additive in or a specific LSD gear oil. 10 bolt holds about 1-3/4 qts, 14 bolt holds about 3 qts. IIRC.

 

[79Scott]

Thanks Dave, I just noticed I prolly should have put this on the differential driveline section......

 

[Snoots]

Get yourself a magnetic fill plug while you're at it.

 

[78C10BigTen]

I just put my 10 bolt in i put 2 quarts (plus some) of 80-90 gear oil plus a tube of LSD oil in. I fill till it starts seepin out the fill.

 

[80BrownK10]

80 w90 works. Don't forget additive if you have limited slip.

I have a 12 bolt and I was thinking it took like 2.5 quarts?

 

[79Scott]

Thanks guys, it took about 2.5 quarts.