My Pete rebuild

[Nostalgic]

Well, oil is fully primed, pan is full and I read 20 psi cranking. (Ironically, cranking was enough to clear my temp codes) I think I'm going to pull fuel from a bucket to flush the return lines and the tanks since I have drains on the bottoms.

Anyone know
1 - how many gpm these flow? Not sure if I can run from a 5 gallon bucket, or if I'd be better off pulling from a 55 gallon drum?

2- all I have is off road fuel on hand - all that will be left is whatever fills the filters and head, and lines, there shouldn't be more than a couple gallons of it in the system once I'm done - any clue if that would be enough to stain 100 gallons of fresh fuel?