Join Date: Dec 2018
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Keep in mind, this is just a data point from my experience with 4 Tundras (and 3 Honda's). I am running Mobil One 0-W20, which is a really good oil. This is 99.9% highway miles (almost no start and stop, no short trips) so the engine is a full operating temp and running about 2000 RPM at 70 mph, so the miles rack up fast while then engine is not doing much work. The oil is very clean at 10,000 miles.
One other thing, I forgot that I did change the spark plugs at 120K on the last truck. They were still in good shape, but there was some wear and it was time to change them. I could not tell any difference in mileage or performance after the change.
If you look up the million mile tundra tear down, they say that that guy did 110 oil changes which is just under 10,000 miles per oil change (he was over a million miles too, we just don't know by how much because the odometer quit registering after 999999). His use for the truck is very similar to mine.