SIR. Is all 5W20 semisynthetic

[Martin10]

I remember reading once that all 5w20 is semisynthetic. Just wondering if that is true. Thanks.

 

[Quattro Pete]

No. There are some full synthetic 5w-20 oils too, for example M1.

Also, what about PYB 5w-20? Isn't it mineral? Or is it a blend?

 

[Hokiefyd]

Martin10, welcome to the forum!

I've seen it stated that most modern oils that bear the SM or SN designation are technically semi-synthetic, requiring some type of synthetic material to meet some of the performance requirements that they meet (even those marketed as "conventional" oil). I've never seen it stated that 5W-20 in particular is a semi-synthetic grade.

 

[aquariuscsm]

There are lots of dino 5W20's.

 

[threeputtpar]

The Fleet Farm house brand of 5W-20, Resolute, was labeled as a syn blend even back when it was a SM API oil.

Now that they're all SN, even the 5w30 and 10W-30 are labeled as syn blends.

I'd surmise that any SN 5W-20 now contains some amount of Group III, it's just a matter of how much is needed to meet the SN spec.

 

[Martin10]

Yes there are. But do they all have a synthetic component? I think so based on Hokiefyd's response. Thanks.
Originally Posted By: aquariuscsm
There are lots of dino 5W20's.

 

[Quattro Pete]

Your statement that "all 5w20 is semisynthetic" is still untrue though.

 

[dave1251]

To answer the question not yet.

 

[aquariuscsm]

Dino 5W20's carried at my nearest WM are GTX,VWB,and PYB. They have that weight in synth blend/semi synth with Syntec Blend and MC.