0W-20 required for emissions certification

[friendly_jacek]

according to Toyota:
Quote:
Q: Why do some models with a particular engine require synthetic oil and other models using the same engine do not?
A: The oil required is partly based on the emissions certification for the model/engine combination, not the engine alone. Since some models were certified to a more stringent emissions level, they have to be serviced with synthetic oil to maintain their certification, mileage, and overall performance.

http://www.toyotaofgreenville.com/ow-20-oil.htm

Now, to clarify, I'm not against 0W-20 oils, and happy about it in my Prius.

I actually agree with each of these claims about 0W-20 oils:

But, if something is not listed above, I read no improvement or worse.

 

[Trav]

Nice Green enviro weenie label.

This is the best part..
Reduced wear on both cold start and fast idle. What about the rest of the time?

 

[RiceCake]

Trav trying to start a 20-30 weight flamewar...

20 weights are fine. Drop it already.

 

[JOD]

Originally Posted By: Trav
Nice Green enviro weenie label.

This is the best part..
Reduced wear on both cold start and fast idle. What about the rest of the time?



Isn't it possible that it could offer the same protection the rest of the time while reducing wear at the points during which the engine experiences most of its wear?

 

[eljefino]

CO2 is an emission.

 

[demarpaint]

Originally Posted By: Trav
Nice Green enviro weenie label.

This is the best part..
Reduced wear on both cold start and fast idle. What about the rest of the time?



You mean the other 60% of engine wear? LOL

 

[TFB1]

Originally Posted By: JOD
Originally Posted By: Trav
Nice Green enviro weenie label.

This is the best part..
Reduced wear on both cold start and fast idle. What about the rest of the time?



Isn't it possible that it could offer the same protection the rest of the time while reducing wear at the points during which the engine experiences most of its wear?


Possible, but would make us doubters feel better if Yota or another mfgr would say so...

Me??? I'd be buying a few quarts of 0W-40 to hide then dump one(maybe two) in during that 0W-20 oil change when no one was looking...

 

[Trav]

Originally Posted By: JOD
Originally Posted By: Trav
Nice Green enviro weenie label.

This is the best part..
Reduced wear on both cold start and fast idle. What about the rest of the time?



Isn't it possible that it could offer the same protection the rest of the time while reducing wear at the points during which the engine experiences most of its wear?


Of course its possible but why don't they come out and say it instead of just cold start and fast idle?

 

[Trav]

Originally Posted By: RiceCake
Trav trying to start a 20-30 weight flamewar...

20 weights are fine. Drop it already.

I don't need your permission to post anything.

 

[FoxS]

Season of goodwill ..........

 

[Trav]

Originally Posted By: FoxS
Season of goodwill ..........

I changed it because its Christmas. I wont be so evil next year.

 

[itguy08]

Originally Posted By: eljefino
CO2 is an emission.

Emitted by every animal on the planet!

 

[Garak]

Originally Posted By: eljefino
CO2 is an emission.


My F-150 is a zero emissions vehicle right now. The distributor is shot and I haven't gotten around to installing the new one. Do I get CAFE credits to sell?

 

[Artem]

I choose NOT to be green and run 5w oils in all my cars instead of 0w.

 

[RF Overlord]

I like the last item:

*Ask your sales representative for more details.


Along with the new oil certification, they must be giving all their sales reps memberships to BITOG.

 

[simple_gifts]

The label says OW-20 (oh double u twenty) in actuality.

 

[aquariuscsm]

Originally Posted By: Trav
What about the rest of the time?


^^2nd. How about extended high speed driving?

 

[JOD]

Originally Posted By: aquariuscsm
Originally Posted By: Trav
What about the rest of the time?


^^2nd. How about extended high speed driving?


Considering that 0W20 and 5W20 are the same weight once up to temps, why would they be making claims one way or another regarding how the oil performs once up to operating temperature?

Besides, extended highway driving is the lowest wear conditions an engine can see.

 

[tudorart]

"^^2nd. How about extended high speed driving?"
Where can you legally do that in the US? That's not Honda's intended use!
If you do, Honda does not recommend/cover it and it's not even included in the severe schedule. Just like racing, towing and driving with a roof top carrier at highway speeds for extended periods of time.

 

[Clevy]

Originally Posted By: JOD
Originally Posted By: aquariuscsm
Originally Posted By: Trav
What about the rest of the time?


^^2nd. How about extended high speed driving?


Considering that 0W20 and 5W20 are the same weight once up to temps, why would they be making claims one way or another regarding how the oil performs once up to operating temperature?

Besides, extended highway driving is the lowest wear conditions an engine can see.

On North American highways sure but what about sustained high rpms and speed/
My mustang sure sounded tappy after a 110 mph run for about 2 hours.Thats when i found this site actually.It was when i first bought it a few years ago and had just put in fresh mobil 1 5w-20. I first noticed a slight tap right off the bat then after that run then engine was extremely loud.Thats when i began questioning the 20 grades.
My hemi rarely sees 3000 rpms and cruises down the highway under 2000 rpms but if i was towing a heavy load lets say through the mountains i would be concerned about the film strength one the oil got really hot pulling steep grades as can be found in the Alberta and BC mountains.
In the mustang thats when I went over to 40 grades,because of how its driven on occasion. I'd rather it be slightly sluggish around town but protected at high rpm/load.
I,ve since learned that I was going overboard using a 40 grade and now that i have a 4v and oil cooler I'm planning on buying a case of tgmo to thin my 40 grade stash into a 30ish grade stash,for the summer anyways.
I'm also going to use the tgmo to thin out all the 50 and 60 grade stuff I've got for my harley.It has an oil cooled and twin head cooling fans,so I'm going to see if a fuel savings can be had by slightly thinning my thick stuff.