. I love “her” more
Thinner oils are supposedly recommended because tolerances on new engines is so tight, thicker oils won't get into the gaps and lubricate.
I would think a thicker oil than the engine is engineered for might not be a good thing, in particular starting in a sub-zero environment. Would not wish to spin a bearing...
I get the arguments. And I mean no disrespect to anyone here. I know there's a wealth of knowledge here. But I wouldn't ever elevate the recommendation of a stranger on a forum over the knowledge of a Toyota engineer. My independent Toyota mechanic tells me to use the recommended oil as well. The only disagreement I have is the intervals. I change at 5k, my mechanic actually still recommends 3k. But I was doing 3k intervals at first and the discarded oil looked brand new. So I'm sticking with 5k. And there's absolutely no harm that can come from doing oil changes more frequently. A lot of old-school wisdom just doesn't always translate to modern technology.
Perhaps you misunderstood Nuke (or I misunderstand you), they are also saying to take the direction of the Toyota Engineers.
Yes, I did misread it. I missed the "Not". LOL. But I've seen so many arguments at this point from people saying it's perfectly fine to run 87 octane and 10W40 oil...
Yes. This I know.
This is simply not true. The same powertrain for the Tacoma/4Runner in Mexico and Russia lists 5W-30 and 10W-30 as acceptable oil weights.
And we are sure the clearances are the same, and no differences in other calibrations, such as the variable oil pump and cam timing mechanisms? The thing is, the engine seems to be solid and reliable with 0W-20. Good grief, essentially the same engine, but normally aspirated, in other Toyota vehicles uses 0W-8, and some are concerned about 0W-20?
Why would they be different? They use the same engine series numbers in these markets.
Yes, same bore and strike, but there could be differences elsewhere. Just asking, as I honestly do not know. We also have to remember these engines are computer-controlled, and could be calibrated differently for different markets/countries. In years past for example, engines would have different cams, compression, ignition timing, carburetors, etc. Now that is all controlled by the ECU.
Best example I can think of is the OEM factory service manual for the 5.7L 3UR-FE. The section that specs oil weight says 0W-20 up to 20W-50 is acceptable.
Wow! Many years back I used Pennzoil 20W-50 Racing Oil in VW Beetles. Operating in the desert of southern Nevada, the air-cooled engines would become toasty to the point the #3 valve stem would stretch, and snap if not predictively replaced. However, those engines were very basic, nothing like today.
Did this action solve GM's issues? Not being a skeptic, just asking, as I do not follow GM products.
