5W-30 for hot climates? 0W-20 for cold climates?

[drNick]

I watched that and his claims are backed up with zero evidence.
He claims the ‘same’ engine here in the US is different than elsewhere and brings up oil pumps which according to him are controlled by programming.

So… I looked up the oil pump part numbers for the same engines in the US that are also used overseas. The part numbers are the same. There are no different oil pumps used, the same engine is the same engine. And there is no different oil pump ECU programming.

Check for yourself. Pick any Toyota engine that is used in the US that is used overseas and search for the oil pump part numbers.

In another video he said you should change your oil every 5000 or 6 months. His reasoning for 6 months is moisture will accumulate in your oil causing wear and issues.
That doesn’t make any sense because in normal driving/operating conditions your oil temp will exceed 212°F and so the moisture in your oil will turn into steam and exit the engine via the PCV.
Definitely change the oil every 5000 miles, but no need to every 6 months if you don’t reach 5000 miles unless you never run the motor.

As I told you, your money, your car, your freedom to do whatever you want….

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[Gumpus]

This is beyond ridiculous. Manufacturers fuck up all day every day. They also have different priorities than their customers, and that shows all day every day. There has been a countless stream of examples from every company including the holy Toyota since the first car 100 years ago.

If it's stupid to blindly ignore manufacturers documentation and engineers, it's just as stupid to blindly worship them.

Not to mention, even if you want to blindly follow what the manufacturer says, in this case the manufacturer says like 4 different things at the same time. Which gospel is the actual gospel?
In the US, us 0-20, in anywhere else, same latitude and weather, same engine, same parts, same dimensions, same air, same gravity, same Earth, use 5-30.
Toyota care: first oil change at 10k.
Toyota computer and owners manual: first oil changeat 5k

And trying to claim that 0w20 is actually *better* at protecting and results in less wear is completely and utterly at odds with a mountain of evidense for all kinds of manufacturers. The best they have shown is that you can *get away* with it if everything else is just perfect, totally ideal lab conditions. In no way is it ever actually *better*. It's a compromise that you can get away with by dint of making the oil more and more exotic and expensive, and just changing the manual to say to change it 3x as often so it's always brand new. Same as adding the turbo. Sure, if everything is perfect and you change the oil every 18 minutes the turbo might last almost 1/2 as long as all those 300k 1st, 2nd, 3rd, 4th gens.

There has even already been cases where the manufacturer had to update their docs to say to use thicker oil than they said initially because too many engines either failed totally or suffered too much wear too fast. Hello the huge GM recall still ongoing just for the most obvious example.
If it was so superior, why did going thicker fix it? Surely they should have gone from 0w20 to 0W8 to fix it?

Tho only reason anyone is using 0-anything is not because it's actually better, it's simply because they are squeezed and trying to improve fuel and pollution numbers any way they possibly can, and they sacrifice other numbers to make those numbers better.

You're making stuff up and you know it.

 

[SouthCoast]

Regarding the GM example, they also indicated it was a manufacturing defect and the switch to a thicker oil was essentially a bandaid, not a fix. It was “cheaper” to change the oil and give a warranty than it was to change thousands of engines…

My brother had this exact scenario occur. They changed the oil in his yukon denali and upped the warranty 150k. They also said they would replace the motor at the time of failure and stack another warranty.

 

[6thGen1419]

Watch the @CarCareNut video on the topic, which is precisely my point. It’s your car, your money and the freedom to do whatever you want with them.

Yes, I was convinced in this thread a couple of weeks ago to stick with 0w-20.

 

[CO/ZA]

0w-20 is filled in everything from Toyotas, to BMW, etc. as it gives 1-2% better fuel economy.

The US EPA then doesn't have to levy as severe a CAFE penalty on the manufacturer.

I will switch to 0w-30 ESP personally once my powertrain warranty is up.

That being said, you can find used oil analysis of 0w-20 used in BMW, VW/Audi, etc. and they read just fine for 10k intervals.

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