Toyota calls for 5W30 in the 1GR-FE V6 of the 2nd gen Tacoma.
Since after a few miles thousand miles dino oil tends to break down faster and have higher viscosity, I'm considering using synthetic M1 0W40 whose viscosity (hot) is likely close to that of used dino 5W30. Toyota engineers must have considered this change of viscosity in recommending 5W30 for dino oil.
Another reason I'm considering M1 0W40 is because many on BITOG rave about it. I've read here that off-the-shelf M1 0W40 is used straight in F1 engines. I've also read it's on the thin side of 40.
What's your take?
I'm going for a conservative 5K OCI.
Since after a few miles thousand miles dino oil tends to break down faster and have higher viscosity, I'm considering using synthetic M1 0W40 whose viscosity (hot) is likely close to that of used dino 5W30. Toyota engineers must have considered this change of viscosity in recommending 5W30 for dino oil.
Another reason I'm considering M1 0W40 is because many on BITOG rave about it. I've read here that off-the-shelf M1 0W40 is used straight in F1 engines. I've also read it's on the thin side of 40.
What's your take?
I'm going for a conservative 5K OCI.
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