[wildmantaz]

I had a 12 bolt rearend narrowed for my 56 project.

How many quarts of gear oil do I need to fill it up?

I am going to use Royal Purple and don't wish to buy more than needed.

 

[dei355]

gear oil

I aways buy 2 quarts it will hold 1 and a half quarts to fill it to the plug. Later Bill

 

[hotrodg726]

the gm service manual says 2-1/4 quarts + 1/2 pint of posi addative. I always use the addative or the posi will chatter when you turn corners

 

[r66ss]

the gm service manual says 2-1/4 quarts + 1/2 pint od posi addative. I always use the addative or the posi will chatter when you turn corners

yep just did my 12 bolt in the chevelle, :tu, used regular GM posi additive, got from GM dealer