I have 55 gallon drums of 5W-20, 5W-30, and 10W-30. I also have 55 gallon drums of Cat 50/50 red antifreeze, and 50/50 green, tractor hydraulic fluid, 30 wt., and 50 wt. I have a 250 gallon tank of 15W-40 and 10 wt. I have a few 55 gallon drums of 80-90 gear o... Login to read more.