I currently drive a 2012 Kia forte with 32k on the clock. I currently have MT85 in for the last few weeks. It felt great at first, but now it's starting to grind slightly going into first at a stop, shifting in reverse, and into second. This mostly happens when its hot outside, (I live near Phoenix, AZ). When cool outside shifting is great, but once it gets hot the grinds start. I am either going back to MTG or trying Motul gear 300. Has anybody run this in a GL4 trance?