My 02 GTP uses 1 1/2 quarts between changes. Has 68,000 on it. I don't think its burning it cause if you rev it in neutral there is no smoke out the exhaust and the tailpipes have zero residue. could a plugged pcv do this? what else could it be. I can smell it when i pull up to a stop sign so i'm wondering if its the oil sending unit leaking excessively.