@40Man, looks like your formula is a tad dated. The latest recipe includes some 0W-40, resulting in an additional 50k miles or so.
I say "some" because the volume specified is actually varied based on the sun's Direct Normal Irradiance for your particular driving climate.
I have about 20k miles of 5W-30. Happy. Even bought a "5W-30" oil cap for my engine. No discernible performance or MPG change. Engine is quieter, especially after a brief warm-up.
Failure modes?!! Lubricity analysis?!?! Wow. Give me some credit.
How about: "Lexus records indicate that you have never had the oil changed here or anywhere in our system. This is a very unusual failure. Since this is a lubrication failure, requiring a $20k warranty repair, Lexus HQ is...
Nah, as long as you keep your facts straight, I'm pretty easy. These forums are public -- they're not just for you and me. Thus, I'm not 'debating' you personally. I've already demonstrated my willingness to concede. But, with the same fervor, I won't concede to misinformation. You are free...
For USA market engine oil, I looked. Used to be 0W20/5W20, as depicted here. But then changed to 0W20, with verbiage that essentially says you can use 5W20 no more than 50% of the time (sorta).
Absolutely no debate on what Mr. T's USA manual recommends: 0W20.
The proof for non-USA vehicles has been provided, and I'm currently comfortable with that, BUT AT MY OWN RISK. At best, information has been provided that might help owners be comfortable with heavying up past 0W20, CONTRARY...
@04UZJ100, This is the excerpt. It's a generically true statement that appears in all TMC vehicles. The same exact paragraph shows up in my 1.8L CT200h manual (aka Prius)!
But when you read the ENTIRE section on towing, and you evaluate the ENTIRE service manual schedule associated with your...
I doubt we'll ever know. But I think the benefit of the thread is more associated with helping us and future owners evaluate change. I know, for me, I was not ready to deviate until I became more comfortable that the OEM specification did indeed support the change. It took awhile, and I blame...
Agree. This is what I was conceding to -- only the CONSIDERATION of using 30 weight oil (no heavier). And that was the conclusion of the OP (I note the OP was edited to include the screen shots posted above -- thanks.).
But, reiterating: your USA market owner's manual is very clear in...
Proof. I've addressed that a few times already...what are you missing? Maybe I missed the link or whatever that demonstrates what you are saying?
Ironically, the 'proof' provided thus far (based on a 2001 European specification 'and earlier') doesn't even permit 0W20!! Is this your proof...
Good to hear that.
The manufacturer's specification is 0W20, only 0W20, in ALL temperatures. And there is a relatively strong warning if 5W20 is used. So there is ample justification for 0W20. Thus far, I've seen NO justification for 5W40 or 5W30 or 0W30.
What convinced you to objectively...
I'd kinda expect that on start-up, wouldn't you? It's a thicker oil. It won't run off the parts as easily. And, at least the USA spec concedes to an occasional 5W use. Is 0W and 5W that much different? Is that presented as your proof of better protection? Was 5W20 any quieter?
In other...
I think it is a given that engineers lost the battle in this situation. Why would an engineer specify different oils for the same engine in relatively the same climates? So there are obviously other variables in play.
I previously proposed two scenarios, in which engineers compromised in each...
@04UZJ100 , @40Man ,
Has someone somehow somewhere determined that heavier oil is better for these engines? I still feel as if your starting point is: heavier oil is better, but EPA makes USA market use lighter oil. Why isn't your starting point: lighter oil is better, but due to cost and...
@40Man, is EURO 3 still the applicable standard (circa 2000)? There appears to be newer standards (e.g., EURO 4 circa 2005), but I'm not at all familiar with any of that. I'm curious if newer Land Cruisers meet newer standards, and, if so, what their oil recommendations are.