I've read the posts here regarding pre-oiler plumbing, and the generally accepted way seems to be to take the input from the sump, and connect the pump output to a oil filter sandwich plate so you get filtration while running the pre-oil cycle. My question is, what prevents the oil being pumped into the sandwhich plate from just backfeeding through the engine-driven oil pump and back into the sump? Is it just a matter of there being slightly less resistance to flow through the filter-engine, rather than through the engine oil pump?
For anyone wondering, when I talk about a pre-oiler, I am referring to an electric oil pump that is cycled prior to engine startup to lubricate prior to cranking.
For anyone wondering, when I talk about a pre-oiler, I am referring to an electric oil pump that is cycled prior to engine startup to lubricate prior to cranking.