I'm going to change my transfer case oil soon and was just wondering if there is anything I need to know about oil. Manual suggests SAE
Gl-4 Hypoid Gear Oil. I notice you can buy synthetic gear oil. Should I go for the synthetic as long as it meets/exceeds API standards? Anything else to be aware of? I'm just thinking of the friction reduction additives that we steer clear of in our engine oil. Anything like that to watch for with transfer case oil?