RC Scavenger. Very neat!
But why can't I just cut the hose clamp off the return line, remove the line from the nipple, push on a clear piece of tubing, run the engine until clean oil coming out, shut down, reinstall the return oil line with a new clamp and crimp it, change the oil filter, refill the tank and back it out? If I am really worried about it, I could install a cheap Fram oil filter before I start the engine, and then change that for a HD filter when done!
A hundred and fifty buys a bunch of clamps (and cheap Fram filters)!!
TQ