Re: Oil pressure instability
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I have had the same problem for 24 years.....I think it's just that the stator doesn't have enough output power. Instead of reading the absolute number I just use relative readings to know its normal.
Since I installed the new Stratus Transponder this year, it draws enough power that it will sometimes shutdown at low engine power, like landing configurations. If the Stratus doesn't have enough voltage it shuts down.
On my XP with 912S the oil pressure gauge shows less pressure when I turn on the running lights and goes lower yet when I turn on the strobe lights. I’m sure it is a electrical load problem, but where do you suppose it originates? Ground? Poor connection? Corroded fuse? Other?