Right after a two day DE event, i check my oil (mobil 5w30 put in right before the DE) and it's still full. So i think, cool i didn't burn any oil even after hard driving.
One week later after normal street driving (no vtec even!)...i check my oil and **** i'm lower than half!! How could that happen?

I checked there is no oil leak anywhere...if there is leak, i should at least see some oil trace consider that much is lost (~2 quarts?)

Isn't oil burning an instantneous (sp?) process instead of drive hard and than lose oil slowly under normal driving condition?

Appreciate any help