Hello fellow Cat nuts, 

Been a while since I've lurked around here. Went to look at a 955H 60A a friend and his dad have owned for 35+ years and sat for about 10. Mostly checked out ok but added some coolant and the dipstick directly in front left of the seat (tranny?) was expectedly milky. A few heat cycles and a quick snort and we were off to the races. 

I don't have a done deal or any 955 books but in case I do get it what oil capacities and types do I need? 

Pic attached.