1966 chevy c10 (gearbox and rear diff oil change)
Just bought my first truck and I was just going through the basic oil changes etc.
The rear diff has a small weep from drive shaft end I was just going to keep an eye on it and on top of it until winter.
I had a suspicion that it was full as their is a hose to the top of the diff but I'm prity sure that's not normal but is not full as I've checked the plug on the side and so I was just going to top it up with new just unsure on what type I have some 80w 90 gear oil that I found some people use online.
Also it's been fitted with a crash 3 speed gearbox just wondering what oil would be good to replace it with.
Any info will be appreciated cheers