Further to that, as I dont have any, what should I buy as a replacement for the white cap and red cap grease as mentioned in the instruction manual?
I use Woodland Scenics Premium Gear Lube on ball diff and diff gears. Extremely smooth. 100% better than white cap. I use Woodland Scenics Moly Grease w/Molybdenum replace red cap.
Woodland Scenics Premium Gear Lube
Woodland Scenics Moly Grease w/Molybdenum