ot a 2000 5.3 in a truck that will leak oil at adom. Drive it 10 mile, may be fine, nxt time, it my loose a 1/2 gt. This I not mine, t has 240,000 miles on it. I see some o bottom of starter, and around back of eng. Cleaned it all off, ran for 40 min. in garage and seennothing. I put il dye in it, going to drive it to wk tomorrow and recheck. Anybody seen this? It has a new pcv and 1 time it lost 2 qts on a long drv.