Exactly, in my Rav4 Hybrid bought brand new -- I have ran TGMO 0W16, Mobil 1 0W16, Mobil 1 Hybrid 0W20, RGT 0W20 and PUP 0W20 since ownership and zero difference in fuel mileage. The PUP and RGT have been the quietest soo far which I know indicates nothing.