427 FE sideoiler - Oil Consumption

[MD427]

I'm curious, how much oil loss/consumption would be considered "normal" of a 427 sideoiler.

I did my last oil change and topped off to the correct level. After driving most a tank of gas through (maybe 100mi for me) I checked the oil and it was still at an appropriate level though seemed a touch lower than i thought i remembered filling to. Then I did a longer road trip with the car, maybe 250mi in a single day, and near the end my oil pressure started becoming very erratic and dropping. So I immediately pull over and check the level and it is very! low. I add a quart and its still low. Another half qt brought it to proper level on the dipstick.

So when car sits in garage it has regular oil spots, but nothing excessive I would say. I don't see any exhaust smoke or indication of excessive oil burning. But by my account I'm losing close to a half qt of oil per 100 mi. Just wondering what you guys with more experience than I might consider typical on this platform.