I think you're good to go. I have a can of automotive wheel bearing grease around my garage that must be 30 years old, and it's still fine. Heck, I'm a gun collector and have a couple of M1 rifles, and I have some of those little-bitty jars of Lubriplate with the yellow screw top that was issued to grease the M1's during WWII, and it's still good.