Ive run QS high mileage 5w-20 now since about 70k miles and the Highlander2.4 has 93k miles
I started using the syn blend QS at about 40k because the engine seems to like QS better than Valvoline reg oil for almost the same price.
I never see QS Talked about in forum....
I started using the syn blend QS at about 40k because the engine seems to like QS better than Valvoline reg oil for almost the same price.
I never see QS Talked about in forum....