I learned the hard way on my ITR.
Topped off the oil before the first session, spun a rod bearing before the first session ended at ORP.
Burned 1L of oil in each of the 20 min sessions at PR and Ridge with my stock GSR motor.
But both motors burned very little oil when out of Vtec, but what fun is that?
Also learned not to put anything directly behind the exhaust when the car is parked.
Upon startup, my toolbox was covered in that black soot.