Arg, I'm not sure about some mechanics. Gotta hold some ppl's hands no matter what, I'm afraid. Had my oil changed 3 days ago, I supply my own and filter. Gave the dummy in the shop a 5qt. Mobil1 bottle and a K&N gold filter. Got the car back, expecting 1 qt left in the bottle. SC2 holds 4qts, actually a little less with the smaller K&N filter. I should have been suspicious when I didn't get anything back, I should have checked the oil immediately! Guess where the other quart went? right, in the car with the other 4. I now have 5qt of oil in my SC2 and have been driving back and forth to work for 3 days. I will have them drain the other qt out tomorrow ASAP. Hope nothing got damaged, should I be worried?