5W20 or 5W30 - Max Engine Life ?

[Garak]

Originally Posted By: fdcg27
You want to use the 5W-20, then why not?
If you prefer the 5w30, go for it.

In the end, that's exactly what it comes down to. If someone wants to use something that's out of spec, that's one's own choice. If he thinks it's better for his vehicle, that it'll never create a warranty issue, or that it's out of warranty, fine. If one thinks CAFE is shoving 20 grades down our throats when we should be using 20w-50 instead, one does have the option of going to the store and buying that 20w-50 and using it. If one thinks the Europeans are nuts and one should use a 0w-20 in a new Audi, go ahead and do so.

 

[dave1251]

Really you have been a member on this site for over 10 years and you did not know this.

http://chevy.oldcarmanualproject.com/chevyowner/57om25.htm
http://chevy.oldcarmanualproject.com/chevyowner/54tom71.htm

There are more examples I can post them here if you wish. But just doing what you did in the past is not really the best practice. If that was the case I would be changing my oil every 2500-3000 miles.

 

[dave1251]

Originally Posted By: Merkava_4
Originally Posted By: dave1251
Originally Posted By: Merkava_4
5w30 is the thinnest I would go on anything. If for some reason 5w30
is too thick for an engine, I wouldn't buy the vehicle the engine is in.


Happy Birthday. But I do not miss any comments that contains almost no sense. Let us know how you came to this conclusion.


BITOG Search Results

And there's more threads like that about 5W-20.


Once again you are trying to use the biased human ear as the basis of your theory. Please spare me the laughter and conduct a reasonable study. I know if I changed your oil tonight to a 5W20 you would never know.

 

[KCJeep]

Originally Posted By: fdcg27

What everyone here should know by now is that thinner oil doesn't seem to reduce engine life and thicker oil doesn't seem to extend it.

AND

The truth is that most engines will work just fine on a variety of grades.


We have our WINNER!

 

[BlueOvalFitter]

Originally Posted By: KCJeep
Originally Posted By: fdcg27

What everyone here should know by now is that thinner oil doesn't seem to reduce engine life and thicker oil doesn't seem to extend it.

AND

The truth is that most engines will work just fine on a variety of grades.


We have our WINNER!

Originally Posted By: BlueOvalFitter
Basically, you could write "5W20 and 5W30" on 2 seperate pieces of paper, put them in a hat, and choose one as a choice of oil to use. Your engine will never know.


I think my answer is the real WINNER!

 

[Quadrasteer]

Well at least I learned something, you guys are a bunch of............just kidding. Never knew that these 2 weights were so similar in performance, by me we always used the 30w and said that the only reason the manufactures used the 20 was to squeak out slightly better MPGs. Now I know better, thanks!

 

[Clevy]

Originally Posted By: S65AMG
Originally Posted By: Clevy
Originally Posted By: S63AMG
So Europeans need thicker oil for 4x longer oci.

Can you give me an example of a 40k oci?

And if heavier oils shear, then how can they go 4x longer?


Try looking.


You made the claim.

For you to make the claim means you should have evidence.

Why don't you provide the evidence upon which you made your claim of Europeans having 4 times longer ocis?

Is it up to everyone else to spend time searching for evidence to validate your claims?

Poor mark. Banned and back.
Anyways do the math if its not too much for ya. 5000 miles is 8000kms. I've seen euro oems specifying 30000km oil change intervals.
Now in all honestly and to get more accurate its actually 3.75 times longer based on that mileage assuming the na oem is specifying 5000 mile drains.
Did I make that clear enough for ya mark er mori er whatever name your using that isn't banned this week.

 

[Alex38]

Originally Posted By: Danno
If you had to chose, and given you are in GA, I would go 5W30.


+1 for a GA resident. Here in Ohio, I'd run the 5w20 in the winter, and 5w30 in the summer.

 

[BlueOvalFitter]

Originally Posted By: Alex38
Originally Posted By: Danno
If you had to chose, and given you are in GA, I would go 5W30.


Here in Ohio, I'd run the 5w20 in the winter, and 5w30 in the summer.

Why?

 

[ChrisD46]

Interesting to note that in 2010 Hyundai claims they engineered : "friction reduction points" within this I - 4 engine that has basically been the same design (Mitsubishi I believe) for several years . Pre 2009 engines were rated for 5W30 . I doubt that 5W30 would not make much difference if used as Hyundai does not claim : "closer tolerances" on this engine - just new materials in places which reduce friction .

 

[Merkava_4]

Originally Posted By: BlueOvalFitter

Why?


Because some people think 5w30 is too thick for cold weather. At the Amsoil product selection page, they recommend 5w30 to only be used for temperatures +60F and below for my Buick. Otherwise, 10w30 is the predominant recommendation.

 

[BlueOvalFitter]

Originally Posted By: Merkava_4
Originally Posted By: BlueOvalFitter

Why?


Because some people think 5w30 is too thick for cold weather. At the Amsoil product selection page, they recommend 5w30 to only be used for temperatures +60F and below for my Buick. Otherwise, 10w30 is the predominant recommendation.

Silly humans.