Chris, Sorry for accommodating your own hijack of your own thread and back to the question at hand - I run an X51 sump and keep the oil at the recommended max. Oil (Royal purple 10-40 - I think) is changed evey second weekend and I have a new (last season) AO thingy and no issues so far. Neither smokes nor has ever shown any signs of starvation. Car has run a variety of tracks in race conditions.
Pedro, (sorry Chris I just can't let it go) My car also runs an electric gauge. In my limited experience, if that was what my oil pressure was doing with a known good gauge, I would send the engine back to Brad, tell him he sold me a dud and that he should fix it. Just my 2c.
Laurie
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