Lions2018

I've got 21,000 miles on mine and I've NEVER used GM DEF. I have always got it at the pump at Pilot, every time I have put it in. And I have never, ever seen the CEL, for anything on my truck. 5.375 Gallons @ 3,234 miles 5.980 Gallons @ 9,094 miles 5.317 Gallons @ 13,480 miles 5.417 Gallons @ 17,132 miles