I don't see why not. I asked my garage owning buddy, where I dispose of most of my oil at, about a bunch of different oils (hydraulic, diff., asst. machinery oils we use, etc.) and he said they were all ok to pour into the tank.

__________________

1980 300TD-China Blue/Blue MBTex-2nd Owner, 107K (Alt Blau) OBK #15
'06 Chevy Tahoe Z71 (for the wife & 4 kids, current mule) '03 Honda Odyssey (son #1's ride, reluctantly) '99 GMC Suburban (255K+ miles, semi-retired mule) 21' SeaRay Seville (summer escape pod)