Agreed and maybe the way Toyota has tuned this enhances proper combustion and heat up which has the potential to reduce fuel wash down and wear from the same. Just do not like the immediate 1500 rpms, then again I love the total 200 package. I just hope it is not another compromise of trying to reduce emissions and moving the long term problem to the vehicle owner. I wish we had a Toyota 3UR-FE engineer who honestly would explain how we got here and why. I know that is wishful thinking.
By the way Google AI has some food for thought around engine wear. As you say, this may still be irrelevant considering how well the 3UR-FE holds up.
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Many people have said that most wear is at startup, and can see how that could be the case, but i have yet to see one conclusive representation of this is action. Especially in a daily driver.
The engine is coated with film, and whatever additives are in the oil, such as ZDDP. As long as that film exists, there is no harm. We are not talking about 10-15 seconds before the area is bathed in oil anyway.
For now that is the consensus, but I just have seen nothing that is conclusive.
And wear, where? Typical systems pump oil to the top and let the oil trickle down back to the pan. So it would stand to reason that some point have not been touched by oil long after the oil pressure gauge gets it signal.
And yet using regular dino 15w40, engines get millions of miles on them.
And yes, as I understand it, all other things being equal, the thicker the viscosity, the less wear.
I wonder if it would be worth it, to incorporate a temporary electric oil pump that would turn on prior to actual start. Interesting idea. As a retro fit.