I wouldn't dare run close to 10k miles in a 1MZ-FE, and both of mine are clean enough to eat off of under the valve covers.
Glad to see the UOA looks good though.
Proves to me again that M-1 oils (I use M-1 0w20 AFE) which are guaranteed for 10K....can easily do that and more. What filter are you using?
Hypervish.....if your using a synthetic, it would be pure waste of $$$ and resources to do short OCI's.
Iv never don't more then 7.5k miles on any oil. But I don't drive much anymore. Hated those 30 mile drives on way back and forth to work for years.
Just because you can doesn't mean you should. I would rather run two cheaper conv. For 5k miles each then run one good synthetic for 10k
Not that 10k is to much. Many manufacturers recommend it. Just that stuff gets darker then sin.
To each his own tho. Looks good
The OP clearly puts on allot of miles, so the oil can definitely go longer and the engine might be clean because it's not only Mobil 1, it's also High Mileage blend on top of that, it gets changed like 3-4 times a year.
If this was the same oil going for a year with short trips around town, racking up 10k then I'd feel differently.
Motorcraft FL-400S was utilized for the 1st analysis. This time, a Fram XG3614.
A few in this thread have made comments about OCI mileage. Looking at the results, what condemnation criteria are you basing that decision upon?