Well it may be that the oiling system doesn't prioritize the main bearings. Either way it is looking like the Toyota TTV6 is a disaster. Old Toyota would have replaced and redesigned the engine but it seems like new Toyota is dragging it's feet. Going to bite them in the ass.
LOL. Put the crack pipe down.
New or Old Toyota isn't redesigning a multi billion dollar engine program for 100k engines.
No issues with the first engine in the family...the Lexus LS.
No issues? I wouldn't say none, there have been documented failures with the Lexus LX. Much fewer than with the Tundra but they do exist. I have been following this real close as I was considering a new Lexus GX..
Things I have gleaned:
recall is for engines built both in Japan and in North America. Seems weird if it was the machining debris theory
Years affected: 2022, 2023 and soon to be 2024. Again seems weird for a debris theory.
What we know. Crank bearings are failing and could be a combo of inadequate oiling of the bearing, bearing size and light weight oil. Either way this engine so far does not look like a 4.7 or 5.7 in terms of anvil reliability. Hopefully Toyota figures it out.