mrdap
Full Access Member
- Joined
- Jul 15, 2012
- Posts
- 187
- Reaction score
- 128
- Location
- USA
- First Name
- C/K_Lover
- Truck Year
- 81-91
- Truck Model
- C20/K30/V15/V2500
- Engine Size
- 350/454
Many thanks!
Very useful information.
This is exactly the sort of thing I'm looking for.
For 14 bolts, it seems that a 75W-140 synthetic is the way to go.
Unfortunately it doesn't address the issue of posi traction additives or anything like that.
From my experience with motorcycles, I learned that you have to be very, very careful with synthetic oils where you have a wet friction pad type setup.
Because synthetic lubricants tend to be "slipperier" than conventional lubricants, it can degrade the performance of a wet clutch or a wet pack positraction unit.
Not sure what kind of a posi a 14 bolt uses, whether it's a mechanical locker or friction pack.
The research continues.
Thanks again, great information.
