Is Schaeffer 10w30 better in cold than their 5w30??

[Patman]

Here are the cold weather specs for 5w30:


Cold Cranking Viscosity @-20°C, cP (ASTM D-5293)
5,073


But this is the spec for the 10w30:

Cold Cranking Viscosity @-25°C, cP(ASTM D-5293)


4,500


So not only is the 10w30's number lower, but at a colder temp too!


Or are these specs wrong?

I got them here:

http://www.schaefferoil.com/data/703.htm

http://www.schaefferoil.com/data/701.htm

 

[Al]

The specs are 3500 cP @-25C for the 5W and 3500cP @-20C for the 10W.
4500cP @ -25C is about right for the 10W.

The value for the 5W is screwed up. I think we have seen questionable numbers from Shaeffers before

 

[Scott_in_WI]

Hey Patman,

The 5073 Cp for the 5w-30 is a typo the temp should read -30°C NOT -20°C

Earlier SL data sheets have the temp correct....

Scott

 

[Al]

quote:

---

Originally posted by Scott_in_WI:
Hey Patman,

The 5073 Cp for the 5w-30 is a typo the temp should read -30°C NOT -20°C

Earlier SL data sheets have the temp correct....

Scott

---

That sounds reasonable.

 

[dragboat]

It's too bad the # 156 Moly Pure Synthetic 5/30 only comes in 30 and 55 gallon drums,,it has a HTHS of 3.8. I forget the VI at 100C but it's up there.

It would probably run with near any 5/30 PCMO made just guessing

 

[Patman]

quote:

---

Originally posted by dragboat:
It's too bad the # 156 Moly Pure Synthetic 5/30 only comes in 30 and 55 gallon drums,,it has a HTHS of 3.8. I forget the VI at 100C but it's up there.

It would probably run with near any 5/30 PCMO made just guessing

---

Al is running this oil, and I'm positive he didn't buy it in a huge drum like that.

 

[Bror Jace]

If I remember correctly, Crazee Al bought hisself a 5 gallon pail of that stuff.

Still, I wish more Schaeffer Oil products (like their Soy Neutra #131C) came in gallon jugs ... just about the perfect size for whackos like us.

--- Bror Jace