Fords smaller turbo engines have yet to impress me. Poor low end grunt and poor MPG. A few other manufactures have the small 4 cylinder turbo engines dialed in just right.
Toyota Crown takes 0w8 oil
- Thread starter UG_Passat
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Yeah. I’m pretty meh about them too.
I've driven a few. They get the job done but left me wanting a bit more. The 3.5 Ecoboost on the other hand I have been impressed with.
Why did Toyota have to put a CVT in the Crown XLE and Limited trims?
edyvw
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edyvw
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I am interested in it too considering that above posts claims they figured everything out.
I am just not sure how Car and Driver got same mpg with BMW 330 M Performance as Camry Hybrid?
Because it's carry-over from other hybrids. It's technically not a traditional CVT transmission though. It's a planetory power split device with this ratios are controlled by Motor/Generator 1
Probably the same way Top Gear got a M3 to achieve better MPG than a Prius.
41% efficiency isn't efficient enough for you for a gasoline engine?
And how did a Camry hybrid average 23 mpg in C&D testing?
edyvw
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What 23mpg? That is what Camry Hybrid gets?
Geez, no wonder they use 0W8.
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DLC will still do better lubricated, it just greatly reduces wear. This article did a test on some gears, the tl;dr is all 15 uncoated gears failed vs 3 of the 14 coated gears (2 of which were ran at a higher stress load).
https://gearsolutions.com/features/coating-applications-for-spur-gears/
There are many “grades” of DLC, and a few different ways of applying it.
In general that is not correct. However, if the engine has been specially designed to tolerate such a thin oil then it will work adequately. MOFT is still king no matter how you slice it.
Note too that someone is paying for all of this redesign to tolerate such oils. The average price of a car reaching over $40,000 didn’t happen by itself and the relentless pursuit of CAFE goals doesn’t come cheap.
With going to lower and lower viscosity, it would seem there would come a time when the oil is so thin it's practically not there.
A 4,000 pound car (Toyota Crown) speced for 0W-8. HTHS probably < 2.0.
I don't think I'll ever want to buy a new Toyota (as nearly all of their new model's are speced for 0W-16 or 0W-8).
And they use the variable electric oil pumps which makes sure engine oil pressure is always at low end of what's adequate
to save tiny fractions of gasoline. I doubt any of these new Toyota's will make it to 200k miles.
I don't think I'll ever want to buy a new Toyota (as nearly all of their new model's are speced for 0W-16 or 0W-8).
And they use the variable electric oil pumps which makes sure engine oil pressure is always at low end of what's adequate
to save tiny fractions of gasoline. I doubt any of these new Toyota's will make it to 200k miles.
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They have entire fleets that have made it to 200k with no issues. Having built race engines I can tell you that lower oil pressure is not a negative, the journals and pins will get lubricated all the same. No need to throw 60psi when 15psi lubricates the same. There is also a distinct difference between pressure and volume. We ain't using 10W-40 anymore...those days are long gone.
The HTHS of oils less than 20 weight is what worries me. If you google: HTHS wear graph, you'll see that engine wear goes up exponentially when HTHS goes below 2.6 (20 weight oils have HTHS of 2.6).
So when these engines running 0W-16 or 0W-8 are doing high RPM's with a heavily loaded car and AC on going up long inclines, and transmissions downshift and RPMS and engine temperatures increase, that is when these thin oils (which become thinner due to the high temperatures near the bearing's approaching 150C) the thin film strength may allow some metal on metal contact.
Also, Toyota's OEM oil filters have only 50% efficiency, and Toyota recommends 10k oil changes which from reading the posts on the Toyota nation site, seems to be taking hold among the Toyota owners. During a 10k oil change interval, any oil will sheer down at least 1 grade thinner which will decrease the HTHS near the end of the oil change interval. Also with a 50% efficiency oil filter, some decent size particles will remain in the thin oil and get in between the moving metal parts and the thin film strength of the hot and sheered oil may allow those particles to cause additonal wear.
So if I were to buy a used Toyota on Craigslist with say 100k miles on it, where the owner followed Toyota's recommendations of
0W-16/0W-8 oil with HTHS = 2.0 to 2.3, + 10,000 mile oil changes + 50% efficiency oil filters + electric variable pressure oil pump,
I would have a concern about the car's future longevity.
I'm sure most people blindly follow Toyota's recommendations and say if Toyota says it's ok, then it's ok, but I personally am turned off
and would probably avoid the car brands permanently that recommend the ultra thin oil with 10k oil change intervals, 50% efficiency filters.
I really used to like Toyota's vehicles. I owned two 1985 Toyota Camry's back in the 1980's and 1990's. I also almost bought a Toyota Previa back in the 1990's. If you google Toyota Previa's (1991-1997), they still have a loyal following with many going over 300k miles, which is very rare for other minivans. But it will be interesting to see the longevity of the new Sienna's speced for 0W-16.
Personally, I prefer a thick full synthetic 5W-30, with 4k oil change intervals, and Fram Ultra oil + air filters with 99%+ efficiency at 20 microns. I'm trying to bring engine wear down to 0, instead of just having "adequate" engine protection for the first 60k miles until the warranty runs out. Since all these same engines of brand new cars are speced for 5W-30 and even 5W-40 in Europe and Australia, all of us have the freedom to continue to use 5W-30 permanently even with new cars with no worries.
So when these engines running 0W-16 or 0W-8 are doing high RPM's with a heavily loaded car and AC on going up long inclines, and transmissions downshift and RPMS and engine temperatures increase, that is when these thin oils (which become thinner due to the high temperatures near the bearing's approaching 150C) the thin film strength may allow some metal on metal contact.
Also, Toyota's OEM oil filters have only 50% efficiency, and Toyota recommends 10k oil changes which from reading the posts on the Toyota nation site, seems to be taking hold among the Toyota owners. During a 10k oil change interval, any oil will sheer down at least 1 grade thinner which will decrease the HTHS near the end of the oil change interval. Also with a 50% efficiency oil filter, some decent size particles will remain in the thin oil and get in between the moving metal parts and the thin film strength of the hot and sheered oil may allow those particles to cause additonal wear.
So if I were to buy a used Toyota on Craigslist with say 100k miles on it, where the owner followed Toyota's recommendations of
0W-16/0W-8 oil with HTHS = 2.0 to 2.3, + 10,000 mile oil changes + 50% efficiency oil filters + electric variable pressure oil pump,
I would have a concern about the car's future longevity.
I'm sure most people blindly follow Toyota's recommendations and say if Toyota says it's ok, then it's ok, but I personally am turned off
and would probably avoid the car brands permanently that recommend the ultra thin oil with 10k oil change intervals, 50% efficiency filters.
I really used to like Toyota's vehicles. I owned two 1985 Toyota Camry's back in the 1980's and 1990's. I also almost bought a Toyota Previa back in the 1990's. If you google Toyota Previa's (1991-1997), they still have a loyal following with many going over 300k miles, which is very rare for other minivans. But it will be interesting to see the longevity of the new Sienna's speced for 0W-16.
Personally, I prefer a thick full synthetic 5W-30, with 4k oil change intervals, and Fram Ultra oil + air filters with 99%+ efficiency at 20 microns. I'm trying to bring engine wear down to 0, instead of just having "adequate" engine protection for the first 60k miles until the warranty runs out. Since all these same engines of brand new cars are speced for 5W-30 and even 5W-40 in Europe and Australia, all of us have the freedom to continue to use 5W-30 permanently even with new cars with no worries.
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... in a test engine designed for at least 30 grade oil, not 0W-8.
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