He said he'd be doing a video on this at some point I believe, but he definitely mentions it. I just did mine - Oil at 4400mi and engine @24,000mi on TGMO and it's still in grade for me:
Not surprised at all. Careful though, I’m sure Mr Dennis d will be running along at any minute to tell you how you can’t prove anything else is better.
Thanks for the invite.......
Except usually you reject data.Thanks for the invite.......
I watched the video Toyota vs. The Motor Oil Geek - Let The DATA Decide!, and it pretty much reinforces what I’ve been saying all along.
The entire point of that discussion is simple: let the data decide — not opinions, not assumptions, not “what feels safer.”
Toyota didn’t just randomly land on 0W-20 and 10k intervals. That’s based on:
durability testing
wear analysis
fuel economy requirements
long-term validation across thousands of engines
If someone wants to run a thicker oil or shorten intervals, that’s fine — but the burden of proof flips at that point.
You don’t have to prove the factory recommendation works.
That’s already been done.
You do have to prove your change is better.
And not with:
“I feel better running it”
“It seems quieter”
“I’ve always done it this way”
But with actual controlled, comparable data:
same engine
same driving conditions
same intervals
repeated UOAs showing a clear improvement
Otherwise, you’re not improving anything — you’re just changing variables and calling it an upgrade.
The video makes that very clear. When you actually look at the data instead of the noise, the argument usually gets a lot quieter.
When the data runs out, the opinions show up.
“If by ‘reject data’ you mean I don’t accept uncontrolled, one-off samples as proof… then yeah, guilty as charged.”
I thought last time it was the memes that show up?Thanks for the invite.......
I watched the video Toyota vs. The Motor Oil Geek - Let The DATA Decide!, and it pretty much reinforces what I’ve been saying all along.
The entire point of that discussion is simple: let the data decide — not opinions, not assumptions, not “what feels safer.”
Toyota didn’t just randomly land on 0W-20 and 10k intervals. That’s based on:
durability testing
wear analysis
fuel economy requirements
long-term validation across thousands of engines
If someone wants to run a thicker oil or shorten intervals, that’s fine — but the burden of proof flips at that point.
You don’t have to prove the factory recommendation works.
That’s already been done.
You do have to prove your change is better.
And not with:
“I feel better running it”
“It seems quieter”
“I’ve always done it this way”
But with actual controlled, comparable data:
same engine
same driving conditions
same intervals
repeated UOAs showing a clear improvement
Otherwise, you’re not improving anything — you’re just changing variables and calling it an upgrade.
The video makes that very clear. When you actually look at the data instead of the noise, the argument usually gets a lot quieter.
When the data runs out, the opinions show up.
According to SAE J300 *new* 0W-20 oil must be between 5.6 and 9.3 cSt at 100C to be in spec so at 6.8 after 4400mi it still is in spec. I do a lot of highway miles bit my city/highway split is likely 60/40 which may account for my numbers.
I agree; Toyota’s 10,000-mile interval is backed by exhaustive validation to ensure these engines reliably reach a 200,000-mile useful life. While UOAs showing dilution & sheared oil may be startling, the data suggests the engine probably still remains within Toyota's engineered safety margins to get it to 150-200K. Owners aiming for 500,000 miles or more can do what they want -- frequent oil changes and UOAs are a logical data-driven strategy -- to exceed base longevity expectations & design. To each his (and her) own, I say!Thanks for the invite.......
I watched the video Toyota vs. The Motor Oil Geek - Let The DATA Decide!, and it pretty much reinforces what I’ve been saying all along.
The entire point of that discussion is simple: let the data decide — not opinions, not assumptions, not “what feels safer.”
Toyota didn’t just randomly land on 0W-20 and 10k intervals. That’s based on:
durability testing
wear analysis
fuel economy requirements
long-term validation across thousands of engines
If someone wants to run a thicker oil or shorten intervals, that’s fine — but the burden of proof flips at that point.
You don’t have to prove the factory recommendation works.
That’s already been done.
You do have to prove your change is better.
And not with:
“I feel better running it”
“It seems quieter”
“I’ve always done it this way”
But with actual controlled, comparable data:
same engine
same driving conditions
same intervals
repeated UOAs showing a clear improvement
Otherwise, you’re not improving anything — you’re just changing variables and calling it an upgrade.
The video makes that very clear. When you actually look at the data instead of the noise, the argument usually gets a lot quieter.
When the data runs out, the opinions show up.
When I saw the UOA’s for both the transmission and differential fluid and the amount of wear particles in there, I decided to do mine today. I originally was gonna do it around 30,000 miles but I’ve got some time today so why not?
