Synthetic or Non Synthetic? What do the dealers usually use?

Originally Posted by houkouonchi

This isnt soo much about me being picky and I think you missed some stuff. The oil was low and the dealer did not put ester (like normal) and were closed so I was just trying to get an idea of what they usually would use so I can put some more in (top it off) and see if its burning oil. Considering I had a massive oil leak and lost almost all my oil I think thats a pretty valid concern.

Anyway I read online that as its safe to mix synthetic/non-synthetic oils but mixing regular with synthetic will lower the quality of the synthetic. I know the dealer said if synthetic they use mobil one so I went ahead and got some of that and topped it off. The car was almost 1qt low. This is a day or two after having major work done at the dealer (replacing the upper oil pan and valves that go with it). I need to know if the car is burning oil like crazy (possible) or the dealer just f*cked up and put too little oil in (like a bit less than 5qt even though I have an oil cooler which means at least 5.5 qt).

I guess I will know in a few days...