Everyone has an opinion on oil and many experts. Here is what I know:Oh wow! Never thought about that, Einstein! Never mind me coming to a forum for the answers! I'll just do it the hard way, then not apologize.
They use an oil close to the consistency of water in these trucks to help meet fuel economy and probably emissions standards in Canada and the States.
In other parts of the world these same engines use heavier oil , even in Mexico I heard.
I do not think a bit heavier oil will hurt it, probably even better for it.
I too have free oil changes and Toyota has been using the recommended 0w20. Iām at 22,500 miles (36,250 km). Iāve done 3 oil changes. 4th on tap.
I donāt like the recommended interval and change more frequently than Toyota and will use a slightly heavier oil after warranty. I am still researching what grade oil to use.
That is my belief, others believe differently. I have done my own oil changes for decades on different vehicles. Never lost an engine.
This oil is really thin, so it must have to get to some tight spaces, yet the same engine is also recommended by Toyota for a heavier oil in other places. Correct me if wrong here.
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You keep an eye on the time, weāll talk to the governor.