Splash and total loss are two different animals.
The Radial engines in a WW2 B17 carried 35 gallons of oil per engine and the system was total loss.
Pop flew a B17 back from Berlin with a cylinder head shot off of one engine and it never ran out of oil.
A Briggs and Stratton 5 HP engine is splash fed. I guess you could say it was total loss as all the oil would eventually run out, but the engine would seize before than point was ever reached.
My engine design from 2006 only produced oil pressure when combustion and compression were engaged. When in flywheel mode, oil pressure was not necessary.
regards
Mech
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