Whats the difference between 5w-20 and 0-w20

[Shuga]

Whats the difference between 5w-20 and 0-w20? I noticed it switched in 2022? Can it still take 5W-20? Or what was the reason for them switching?

 

[mikeru82]

0w-20 has a slightly lower pour point than 5w-20. Once they reach operating temperature they are essentially identical. Run whichever one your owner’s manual says to use if you’re still under warranty. There is very little difference between them

 

[Shuga]

Thank you

 

[silver billet]

Whats the difference between 5w-20 and 0-w20? I noticed it switched in 2022? Can it still take 5W-20? Or what was the reason for them switching?

The 5w-20 is more shear stable. It will use less VII's, or in some cases, none at all. Which means at high temps it is more resistant to shearing down.

 

[Shuga]

The 5w-20 is more shear stable. It will use less VII's, or in some cases, none at all. Which means at high temps it is more resistant to shearing down.

Is that a good thing or bad lol

 

[silver billet]

Is that a good thing or bad lol

More shear stable is a good thing. When an oil shears down it can drop almost as much as a grade or more (so maybe it's now a 0w-16 instead of a 0w-20). Xw-20 is already super thin for a hemi, shearing down is bad news.

 

[mattee]

Correct me if I'm wrong but the only real difference between the 2 is viscosity at cold temps. 0w-20 is slightly more fluid in cold temps than 5w-20. At normal operating temp they are the same. You will never convince me that they actually changed anything in the engine (clearance related) to require a thinner oil. The real reason for the change is so they can post .00000000001 mph better fuel mileage rating. I agree with mikeru82 in that you should run 0w-20 while under warranty just in case you ever have a problem. once you are out of warranty I plan to run 5w-20. If you live in a warm climate you could even consider 5w-30 as well......just my 2 cents worth.

 

[HSKR R/T]

Is that a good thing or bad lol

If you are using a good quality synthetic, it's not an issue.

 

[H2OMAN]

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