Hi Gene.
What I meant to communicate is that, with the remote starter, you can crank the engine long/fast enough to watch how the oil flows around the head. The spray bar can get clogged, and it's important to make sure that it's doing the job.
If by sticking shuttle valve your mechanic means the check valve in the filter canister, then it's a well documented problem (see bmwe34.net). However, I'm not sure how that would/could destroy the virtually bulletproof M30 bottom end. From what I recall, the M30 oil pump rarely needs replacement -- I think Bill R. mentions it as being an item to check.
Fritz's top end is nosier than a two year old with a tambourine. Brett Anderson says the valves are "a little loud" but nothing to be concerned about, and I'm not. Sounds like a sewing machine, and I'm sure people get nervous around it when the car's idling away at a red light. Oh well.
Best, whit