Topic: Crankcase oil hose washers

[zabzob]

My bike is leaking a fair amount of oil from the oil lines into the crankcase. I'm planning on ordering a couple of new o-rings and making sure the mating surfaces are super clean when I reattach the hoses. While on Yamiya looking for o-rings, I see these guys:

CB750 K0-K6 ATTACHMENT SET, OIL HOSE

Has anybody used these, or have any other advice for how to ensure no leaks from the oil lines?

[flybox1]

Those are the crush washers to use at the oil tank connection.
Crush washers at the top, o-rings at the bottom.
Nether of these, however, will prevent an oil line if from leaking if the crimp to the fitting no longer does its job