Toyota Crown takes 0w8 oil

[Shel_B]

It's not Styrofoam. Structural foam is typically urethane based and adds rigidity and strength without a lot of added weight. But it is not the primary structural element.

Ahhh ... yes, I'm familiar with structural foam and how it's used. Thanks for the clarification.

 

[PimTac]

I am familiar with the gluing as I've seen it (on a BMW, if memory serves me), and I have also seen some composite (plastic) structural components, but high-density styrofoam is new to me. Can you provide some pointers to that information? Thanks!

All I can tell you is that on my CX5 , when you access the rear and pull up the floor there is a lot of styrofoam there that the spare tire sits in. That entire section is one piece.

Okay, structural foam. I’m not an engineer.

 

[JohnnyJohnson]

All I can tell you is that on my CX5 , when you access the rear and pull up the floor there is a lot of styrofoam there that the spare tire sits in. That entire section is one piece.

Okay, structural foam. I’m not an engineer.

The 2022 CX-5 has the same thing! Anyone know will a full size spare fit in there rather than that funny almost spare?

 

[0W-16]

That engine specs the Aisin OPT-125 according to RockAuto, which you can find on other sites like Summit as well:
https://www.summitracing.com/parts/asn-opt-125

From what I can find, this is a global part # for this engine.

@ssaaff should call a local parts house and see if the engine in Saudi Arabia calls for the same part #, if it does, well, that bins that theory.

But different software specific for 0W-16 required for US CAFE standards.

 

[OVERKILL]

But different software specific for 0W-16 required for US CAFE standards.

Are you going to pick a lane? First they have a different oil pump, now the posit is that the ECM is programmed differently, do you actually know or are you just throwing dung at the wall to see what sticks at this juncture? Honest question here.

 

[ZeeOSix]

After reading all the posts on this subject I cannot believe Toyota, BMW and other automotive engineers don't understand that MOFT and higher HTHS give more protection than lesser values. I notice that the more knowledgeable posters here understand this and they point out that going thinner and thinner isn't done for technical reasons.

Yep, too add. All the engine design engineers understand and know that higher HTHS and MOFT gives better engine protection, but CAFE (and fuel economy competition for sales) is forcing/driving them to always strive to meet ever increasing goals and increased fuel economy. Going with oil as thin as possible is always in their toolbox. Using xW-20 is approaching about as thin as heritage engine design method can tolerate without causing too much wear, and going below xW-20 has forced engineers to reformulate oil with better film strength (AF/AW package) and to use special/unique mechanical designs and materials for engines specified to use below xW-20. Like others have said, there is no benefit from thinner and thinner oil except fuel economy. It does not reduce wear when all other factors are constant. No engine is going to be damaged or wear more from thicker oil, as long as the W rating is correct. Obvioulsy, engine wear or damage could occur if someone used the wrong W rating during super cold start-ups where the oil pump could not move and pump the oil well enough. Lack of lubrication can cause rapid wear and damage.

I'd love to see a good argument for thinner and thinner oils but that hasn't happened here.

It will never happen because thinner and thinner oils will never protect the engine from wear better compared to a thicker oil where both have the same AF/AW package. Film thickness (MOFT) is the main factor in preventing moving parts from rubbing and wearing, and film strenght (AF/AW package) is what has to take over when the film thickness is inadequate. That's the whole basis of the physics of machine tribology.

 

[ZeeOSix]

But different software specific for 0W-16 required for US CAFE standards.

Proof with some links? Anyone can make that claim, but I'd think someone would only make that claim if they know it was true instead of parroting. If they know it's true, then they should be able to show where the proof came from to back it up.

 

[kschachn]

But different software specific for 0W-16 required for US CAFE standards.

Lol you are just pulling rabbits out of your hat. Problem is they are all dead.

Stop making stuff up. You're just looking progressively sillier the more you post these goofy "reasons".

 

[kschachn]

Proof with some links? Anyone can make that claim, but I'd think someone would only make that claim if they know it was true instead of parroting. If they know it's true, then they should be able to show where the proof came from to back it up.

He doesn't know. It is all made up.

 

[kschachn]

Are you going to pick a lane? First they have a different oil pump, now the posit is that the ECM is programmed differently, do you actually know or are you just throwing dung at the wall to see what sticks at this juncture? Honest question here.

Imagine this. I buy a US vehicle that "requires" a certain grade because the oil pump programming will starve the engine of oil if I use any other grade. But I drive (legally) to Mexico or even Canada and they don't have that grade because they don't have the programming. Poof! My engine or oil pump grenades when I happen to use a -30 grade.

Or in a particularly cold winter here in Southeastern Wisconsin all those cars with this secret squirrel US programming never reach normal operating temperature on short trips. So under completely reasonable operation poof the oil pump grenades, all the while starving the engine of oil.

What a ludicrous idea this is.

 

[edyvw]

But different software specific for 0W-16 required for US CAFE standards.

So tell us what happens when Jim down the road puts 10W30?
Also, can we have some proof? I mean so far anyone who posted anything that is factual, are people on other side of this discussion.

 

[edyvw]

Are you going to pick a lane? First they have a different oil pump, now the posit is that the ECM is programmed differently, do you actually know or are you just throwing dung at the wall to see what sticks at this juncture? Honest question here.

No. Bcs this is all projection to make themselves feel better about their choice.

 

[CR94]

All I can tell you is that on my CX5 , when you access the rear and pull up the floor there is a lot of styrofoam there that the spare tire sits in. ...
Okay, structural foam. I’m not an engineer.

Styrofoam is only a brand name for expanded polystyrene (= EPS) foam. There are other manufacturers.

 

[ATex7239]

When you are arguing on the internet and realize you are wrong but now you’re in too deep to stop….

 

[cman]

So new Toyota doesn’t have anymore language about using heavier grade?
Also, I really didn’t know autobahn doesn’t exist here. I guess one always learn something new.

it might only be in certain regions like they normally do... I regularly visit the Toyota Australia website and other countries Toyota websites to check out multiple owners manuals for the same vehicle, each from a different region of the world.

 

[cman]

Dumb is an understatement. More like deliberate engineering malfeasance, a class-action lawyer's dream.

These arguments about how and why thinner oils are required get goofier and goofier. Now we have the oil pump having a design that can starve the engine.

They told me the same thing about my VVTI valve. I run 30 weight instead of 20.. i have a friend who runs 40 weight in the same Toyota engine... zero problems. In fact its indicated as being able to use up to 50 weight in the Australian owners manual for my Corolla.

 

[cman]

Yep, too add. All the engine design engineers understand and know that higher HTHS and MOFT gives better engine protection, but CAFE (and fuel economy competition for sales) is forcing/driving them to always strive to meet ever increasing goals and increased fuel economy. Going with oil as thin as possible is always in their toolbox. Using xW-20 is approaching about as thin as heritage engine design method can tolerate without causing too much wear, and going below xW-20 has forced engineers to reformulate oil with better film strength (AF/AW package) and to use special/unique mechanical designs and materials for engines specified to use below xW-20. Like others have said, there is no benefit from thinner and thinner oil except fuel economy. It does not reduce wear when all other factors are constant. No engine is going to be damaged or wear more from thicker oil, as long as the W rating is correct. Obvioulsy, engine wear or damage could occur if someone used the wrong W rating during super cold start-ups where the oil pump could not move and pump the oil well enough. Lack of lubrication can cause rapid wear and damage.


It will never happen because thinner and thinner oils will never protect the engine from wear better compared to a thicker oil where both have the same AF/AW package. Film thickness (MOFT) is the main factor in preventing moving parts from rubbing and wearing, and film strenght (AF/AW package) is what has to take over when the film thickness is inadequate. That's the whole basis of the physics of machine tribology.

This /\ /\ /\ /\ exactly. Engineering/production of modern internal combustion engines is better than it has have EVER been. Especially Toyotas. But the main focus is on increasing fuel economy, especially in countries where there are large tax incentives to have higher fuel economy like the US.

Once you scratch the surface just a bit and peel back a couple of layers.. it becomes clear that Toyota (and other automakers) are making major changes with these ICE vehicles in an effort to increase efficiency and fuel economy. Electric vehicles are becoming more advanced, and more popular... they must adapt in certain markets, or be pushed out.


Toyota added Exhaust Gas Recirculation to its new Dynamic Force engines. Something not found in its previous Toyota gasoline engines. They also redesigned the engine internals to accommodate even thinner oils like 0w-16 and now 0w-8.

Now think about this... Toyota, a company traditionally concerned with simplicity and reliability.... why would they add EGR which only causes more complication, and often issues... because of that slight bump in fuel economy!

Same with the variable oil pump... because of that slight bump in fuel economy!


Same with the thin oil... because of that slight bump in fuel economy!


Same with the plastic and glue to save weight... because of that slight bump in fuel economy!


Toyota is running the thinnest oil it can, while still having acceptable engine wear. I am extremely happy to see the new 2022 and 2023 Toyota's still have the broad range of oil viscosity recommendations outside of the USA. So it seems that Toyota does still indeed care about reliability, just not as much as they are about money and tax breaks in certain markets.


And to all the people saying there are multiple parts each for different regions of the world.. that would not be cost effective. Companies avoid this at all costs whether its software or hardware... both cost a lot of money to develop. Not saying it does not happen in certain instances.. but with an oil pump? I am not buying that. Now with a gauge cluster that shows kilometers instead of miles.. sure!

 

[PimTac]

Now with a gauge cluster that shows kilometers instead of miles.. sure!

These days you push a button or change settings.

 

[OVERKILL]

These days you push a button or change settings.

Yup, I can make my Jeep look Canadian or US with just a setting in the uConnect screen.

 

[4WD]

Yup, I can make my Jeep look Canadian or US with just a setting in the uConnect screen.

How do you make it into a logical Nav system ? Whilst I love a number of display options on mine - it’s the worst Nav system of all vehicles in my signature …