It has a back spec for 0w20 and 5w20 all the way to the first production year. I tried TGMO 0w20 in my old 02 2AZ-FE daily driver. Quiet starts, felt peppy and smooth. More valve train noise than 5w30 full syn when warm. Not real loud, but noticeable. Only used it for 1 OCI due to problems with leaks and oil consumption in its old age. For me, not worth replacing every rubber seal in the engine to run it. If you have no problems with consumption or leaks, give it a try. Mobil 1 makes a 5w20 HM oil now, haven't tried that yet. Maybe next fall.