I want to change all my fluids to synthetic.Diffs,trans,transfer case.Ihave te G56 six speed I think.Reverse is lower left.I have anti spin 373 diff.How much fluid do I need for each unit and what grade/weight.Thanks

 

Don't know the numbers off the top of my head, but the owners manual should have all that info. Check it out.

 

Do a search.