Vtec didn't engage strictly from the loss of oil. Vtec runs off of an oil pressure system, if there's no oil, there's no pressure, ie- no Vtec. Always check up regularly on your oil for how much you have left, and what color it is. 4k is a little high in mileage to have left it alone. Check it every 1000 at least, to add a little.. and change it every 3k. Unfortunately, it's very very very common for our ludes to burn oil, but what's an extra qt of oil every 3k compared to owning a super sexy car?
