I've used Kendall GT-1 5w-30 blend for some time and it helps my M35 run clean and quiet. The last price I paid was $3.78 a quart. I'll be changing oil in a friend's 2013 Highlander. Does anyone have any experience using the 0w-20 blend by any of the three brands in the Phillips 66 family? It's certainly a cheaper option than TGMO.