Mobil 1 5w-30, 2.7k mi; Chevy Traverse 3.6L, 77.5k mi

[Nyquist]

I had this UOA done when I started losing a little coolant. I was really only concerned about whether coolant was ending up in the crankcase. I've since found the source of the leak and have fixed it.

Vehicle has had Mobil 1 5w30 its whole life. It has a lot of shorter trips.

 

[Slick3914]

Looks good, I run the same oil in my ‘21 RS.

What was the source of your coolant leak?

 

[Nyquist]

Looks good, I run the same oil in my ‘21 RS.

What was the source of your coolant leak?

Small leak on the surge/overflow tank that was not obvious.