For mine it came pretty quick, I noticed after a trip to Colorado that the engine oil was low. I re-filled and everything seemed fine. Then it starts burning oil, and I hear a knocking noise BEFORE the oil light even comes on. It starts burning more oil. The oil burning is not noticable anywhere but on the dipstick, there was no smoke blowing and miniscule oil on the ground where I park. Basically NO sign of oil loss other than the egine knocking on acceleration. I had the oil changed, and kept rolling, after 1000 miles I took it in to have the fluids topped off. 2.5 quarts low. I was driving home a few days later, and the engine in mid driving starts making a very LOUD knocking sound. So loud I heard if over the radio at 70 mph!!!! That was the end!!!!