I have a tank that I made out of a 6" section of brass pipe with 2 brass end caps on it. The bottom is drilled and tapped for a 1/4 NPT pipe tread, I thread a cut off valve into the bottom cap, then run a grease gun hose to the blower, next I fill the small tank with WD 40, at the end of each day, I just turn the cut off valve on and off as quick as I can, this allows a small amount of WD-40 into the blower which lubes it along with my vac HX unit on the other side of the machine, a tank full of WD lasts at least 6 mos. no fumbling for the straw to the can and no looking for the can itself, It keeps the lobes on the blower from excess rust, lubes my blower HX, with very little hassle, I did try using a radiator overflow tank but that always leaked,