So I just bought my 06 jetta. It's been -5 degrees or so here for a week. I put hot shots anti gell in it. The same stuff I use in my truck never had an issue. But tonight I was driving the jetta and all of a sudden it started shuttering I thought the dsg went out. Then the glow plug light started flashing. No CEL the car shifts fine but if you gave it fuel it'd shutter. So I limped it back to town. The light went out and ran fine. Was the fuel gelling up?