I am currently using T6 in my RZR-S 800. But I have some leftover quarts of Amsoil 20w50 from my Harley I sold being that I live in Houston and it gets hot here in the summer could I mix the 20w50 with some Mobil 1 0w40 and be just fine? The oil capacity is 2 quarts. So I was thinking a quart of...