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Agree. There is truly a method to their madness. If you change your own oil using, for example, 30 weight, if you were to have an engine warranty issue and the dealer sees that you used the incorrect oil then I would bet your warranty would be voided.
Full stop we need to stop propagating this myth of blanket warranty denials. Magnuson moss warranty act prevents this type of behavior. I will agree that service centers have become more adversarial lately, and that has provided FUD to follow things blindly or increase the value of dealer only services.
Again brings me back to choose which owner you are and enjoy.
I guess the European and other regional manuals were made by a different set of fake toyota engineers producing Fake tt24-FTS engines, in likewise fake highlanders.
As I said earlier, please choose which type of owner you are, no judgement in enjoying lattes and loaners over researching and understanding what Toyota engineers have already published for those interested with an appetite to learn about oil, and the possibilities that apply to the t24-FTS engine.
Again, you can do what you want to do. You say no judgement but your post is full of deriding judgement lol.
This is one of those topics that always spirals into a ridiculous argument. Bottom line is, if you just do what the manufacturer says to do, you will be fine. You can do more, you can spend your time researching oil and trying to come up with your own maintenance plans and thats also totally fine. Just don't denigrate people who just do what the manufacturer says and use the oil they recommend because thats a totally reasonable thing to do...
I see no evidence at all that Toyota's choice to go to 0W20 oils has created any longevity or reliability issues in their engines. I see no reason to try and "out engineer" the engineers here.
On what engines? On all the 2GR and 1/3UR engines I've pulled samples from the 30 weight has less wear over the same OCI
Im sure it's fine on XX-20 but what if you like to lean on it heavily like I do? Why do the track cars with otherwise identical clearances inside all spec XX-30 with oil coolers?
Last edited by Striker223; Nov 9, 2025 at 08:37 AM.
I guess the European and other regional manuals were made by a different set of fake toyota engineers producing Fake tt24-FTS engines, in likewise fake highlanders.
As I said earlier, please choose which type of owner you are, no judgement in enjoying lattes and loaners over researching and understanding what Toyota engineers have already published for those interested with an appetite to learn about oil, and the possibilities that apply to the t24-FTS engine.
On what engines? On all the 2GR and 1/3UR engines I've pulled samples from the 30 weight has less wear over the same OCI
But where are the engine failures? You may see "less wear" on a sample but in reality there is no impact on engine lifespan or reliability. Everything is a balancing act, the engineers balance wear with fuel economy and performance as an example. They balance recommendations for maintenance based with competitors schedules and customer's appetite to take on maintenance. Its all a balance. The fact that using a different oil may result in less wear doesn't mean that is necessarily beneficial to the vehicle's owner.
If you want to use a different oil, thats fine. Don't tell people they are doing the wrong thing by using what the manufacturer recommends though because that's not fair.
Again, you can do what you want to do. You say no judgement but your post is full of deriding judgement lol.
This is one of those topics that always spirals into a ridiculous argument. Bottom line is, if you just do what the manufacturer says to do, you will be fine. You can do more, you can spend your time researching oil and trying to come up with your own maintenance plans and thats also totally fine. Just don't denigrate people who just do what the manufacturer says and use the oil they recommend because thats a totally reasonable thing to do...
I would like to know which post in this thread, did I mention 0w20 was harmful and should not be used?
On the contrary, i have provided Toyota "engineers doing the engineering" data which provides a variety of oil options so op can rest easy on their original question about 0w20 and the alternatives available for his or her motor.
No feelings should be hurt to learn about oil and application.
Oil filler cap reads Use xyz. That's ok by me. Manufacture recommendation may not be the absolute best for every possible use from 20 below zero starts to towing uphill during 120 degree summer days, but it's the best compromise for selling vehicles operating in wildly different environments. That said, if a certain brand or rated oil helps ya sleep better at night... your vehicle's engine will likely survive it. Good luck.
Last edited by ChattanoogaPhil; Nov 9, 2025 at 11:09 AM.
But where are the engine failures? You may see "less wear" on a sample but in reality there is no impact on engine lifespan or reliability. Everything is a balancing act, the engineers balance wear with fuel economy and performance as an example. They balance recommendations for maintenance based with competitors schedules and customer's appetite to take on maintenance. Its all a balance. The fact that using a different oil may result in less wear doesn't mean that is necessarily beneficial to the vehicle's owner.
If you want to use a different oil, thats fine. Don't tell people they are doing the wrong thing by using what the manufacturer recommends though because that's not fair.
Sure! But the person I responded to was/is tracking his LC500 and it doesn't have an oil cooler
They are more wrong than the person using the oil that has less wear if their goal is engine protection. If their goal is MPG they are more correct then
Regardless it will probably be fine unless you have the Toyota TTV6, that will self clearance no matter what you do lol!
Last edited by Striker223; Nov 9, 2025 at 12:06 PM.
Sure! But the person I responded to was/is tracking his LC500 and it doesn't have an oil cooler
They are more wrong than the person using the oil that has less wear if their goal is engine protection. If their goal is MPG they are more correct then
Regardless it will probably be fine unless you have the Toyota TTV6, that will self clearance no matter what you do lol!