16-645E 265 gallons Shell Caprinus XR 40.
Makes for a very expensive oil change, don't it? I am trying to remember back when I was with GE working on the BNSF account... I am pretty sure they scheduled oil changes on every M368.
On the shortline I worked for, we were running 567s, and even if we had a bad power assembly and the thing was souping... we'd just let it sit for a couple days, then drain water from the crankcase sump, then fire it off and idle it with the valve covers up to steam off any residual water. Lube oil changeouts were unheard of, unless we had a cracked head and fuel oil contamination... which the oil would be used for the shop heater which was a waste oil burner.