I wonder if these treatments also apply for the Corolla Hybrid or if we need to do the temperature Test/drain? (My Tundra has that and it isn't an exciting method due to the fact You need to get over 6 quarts back in there.) But in terms of fuel-saving goes, https://cvt-toyota19517.blogtov.com/14853311/the-basic-principles-of-cvt-toyota