"Tight Engines" need 0W-20 he claims

[SumpChump]

At work this weekend my colleague and I got arguing over our Corollas. He has a 2005-2007 if I recall. He runs and it calls for 5W-30.

Mine is a '13 and calls for 0W-20. I was mentioning that next summer I'd be doing some long highway trips for work and that I was going to run a 0W-30 or even 5W-30. He started arguing and said that my newer engine was made "tighter" and needs the 20 weight. LOL

I showed him the Russian manual online that shows eve a 40 weight! He claims it was a motor made to lower tolerances even though same 1.8L design.


Ugh!!!

 

[Chris142]

Engine tolerances have not changed in 80 years.

 

[zach1900]

Hogwash, 0w20s can do the work of yesterday's 10w30s, lubrication (oil) has improved more in the last 20 year's or so than how an engine lubricates.

 

[SumpChump]

Hogwash is right. And after several k miles of highway driving that 0W-20 will have sheared down anyways. The 30 weight will cling better at higher revs and temps. He thinks I'll overdo the oil pressure and cause frictions heat with a heavier weight.

 

[zach1900]

Neither Corolla do less than 300K on pretty much any oil 0w20-10w40. I'd bet my life on it!

 

[Colt]

0w20 is all about squeezing out a few tenths of a mile more MPGs for the CAFE requirements.

 

[zach1900]

Cling better? You want the oil moving not clinging, right?

 

[zach1900]

I think 20wt oils were born strictly because of an overbearing political EPA, but I think they are also every bit as good as an "old fashioned " 10w30 as far as longevity is concerned, SOPUS and all the others have some pretty good biologists.

 

[cat843]

Well you each should pull the oil pan, then a main bearing cap and put in some plastigauge, torque it down, then remove the plastigauge and see which engine is tighter.

 

[camrydriver111]

Originally Posted By: SumpChump
I showed him the Russian manual online that shows eve a 40 weight!


Do you know for a fact that the Russian engines are identical to the US ones?

 

[lexus114]

Originally Posted By: cat843
Well you each should pull the oil pan, then a main bearing cap and put in some plastigauge, torque it down, then remove the plastigauge and see which engine is tighter.



that would end a lot of the controversy

 

[mikered30]

You should show him the TSB for his car that back specs a new dipstick for increased oil capacity and the tsb for running 5w and 0w 20 oil. That will blow his mind.

 

[redbone3]

Back in the '50s my dad had a Mobil gas station. One of the most popular oils was 20 weight. I think they called it "Trop Arctic." The implication was that it was good in any climate. A great many cars used that oil with no ill effects, and I doubt the clearances were any tighter than on a modern automobile.

 

[zach1900]

Didn't even know there were 20wt oils in the 50s.agreed though trip artic is a great oil and had at $2 a qt many times a year.

 

[SwampSurvivor]

0w-20 makes my CVT shift funny. I run 10w-30

 

[HerrStig]

Originally Posted By: camrydriver111
Originally Posted By: SumpChump
I showed him the Russian manual online that shows eve a 40 weight!


Do you know for a fact that the Russian engines are identical to the US ones?
Why would Russian engines be any different? DO they have a "special" assembly line in Japan for "Russian" engines? That would raise the per unit price.

 

[PandaBear]

Originally Posted By: HerrStig
Why would Russian engines be any different? DO they have a "special" assembly line in Japan for "Russian" engines? That would raise the per unit price.


Japanese engine tends to run higher compression for higher octane fuel. What prevents Russian engines from running different compression due to their own laws, costs, fuel quality, etc?

 

[RISUPERCREWMAN]

Originally Posted By: Chris142
Engine tolerances have not changed in 80 years.

Really? You need to rethink that foolish statement. Both engine & oil technology are vastly different opposed to 80 years ago!

 

[Eddie]

I think clearance may be the same but, tolerances are much tighter. Ed

 

[AirgunSavant]

My manual calls for 0w-20 or 5w-20
I use 5w-20 synthetic as my other cars use it and it makes it easy.
Buddy of mine tried to ream me saying the engine can't handle 5w-20..
Maybe next time I'll use straight 30 with motor honey added.