i just bought a new G5 and they gave me a OC coupon but i took the oil and filter instead...i was wondering what happens to a tank of oil that has been refilled for years, it must get mixed in with some old oil...i saw the new camaro which is a awesome car, best i have seen in years...stang and challenger are great too...walmart told me they get a delivery of pennzoil every week for their bulk oil that is stored...i asked if i could buy some if i brought in a jug and they said no...the fat cheap guy...my G5 OLM is at 90% with 1100 miles on odometer so i am looking at a honda like 10k OCI but like any true oil nut, that will never happen...maybe 3k and put in some m1 0-30