New flavors of Castrol 5w30 and 5w40 found at my local Walmart

[edyvw]

Here is latest 5W30 A3/B4 for North America.
As you can see there is difference in pour point between one you have where it shows 3.6cp and this one here.
Oz one is -36, this one is -45.
https://msdspds.castrol.com/bpglis/...232CD9080258415005809FB/$File/BPXE-9P9HK3.pdf

 

[SR5]

0W30 some 5-6 years ago, when Castrol was more transparent, had HTHS of 3.58.

Could be the way it was rounded or edited in the different spec sheets

3.58 rounds up to 3.6
But 3.58 if you just remove the second decimal place becomes 3.5

But that is just a guess

 

[KCJeep]

I thought a 30 grade had a 3.5 max HTHS? I suppose 3.58 still qualifies.

 

[edyvw]

Could be the way it was rounded or edited in the different spec sheets

3.58 rounds up to 3.6
But 3.58 if you just remove the second decimal place becomes 3.5

But that is just a guess

Do take in consideration that Castrol you posted has pour point of -36, and Castrol 5W30 now available in the US has pour point of -45. SO we are talking two different oils.

 

[edyvw]

I thought a 30 grade had a 3.5 max HTHS? I suppose 3.58 still qualifies.

No, ACEA A3 is minimum 3.5 regardless of grade.

 

[SR5]

Do take in consideration that Castrol you posted has pour point of -36, and Castrol 5W30 now available in the US has pour point of -45. SO we are talking two different oils.

Yes significant difference in pour point, all we really know is that it has a min HTHS of 3.5 cP and a min TBN of 10 because it’s A3, plus a Noack of 10% or less because it’s MB 229.5, and probably rich in ZDDP because it’s SL.

Whether it’s 3.5 or 3.6 cP, 10 or 11 TBN, 8 or 9% volatility, 1000 or 1100ppm Zn doesn’t really matter to me, what it isn’t is another thin ILSAC 5W30.

If they measured two different batches of the same mass produced formulation, would they even get the same numbers anyway? Probably not.

 

[Quattro Pete]

I would go 0W30 or 0W40. They are close to 50% PAO.

Thanks.

I just noticed the 5W-30 A3/B4 at my local Walmart. Was wondering if there is any benefit to running it in my old BMW instead of the 0W-40. Sounds like I should just stick to 0W-40.

 

[Quattro Pete]

Here is latest 5W30 A3/B4 for North America.
As you can see there is difference in pour point between one you have where it shows 3.6cp and this one here.
Oz one is -36, this one is -45.
https://msdspds.castrol.com/bpglis/...232CD9080258415005809FB/$File/BPXE-9P9HK3.pdf

How did you find this?

When I do a search on Castrol USA for "A3/B4", it comes up with this older file version which shows pour point of -36C:
https://msdspds.castrol.com/bpglis/...02AB64780257D540060FBE8/$File/BPXE-9P9HK3.pdf

 

[edyvw]

How did you find this?

When I do a search on Castrol USA for "A3/B4", it comes up with this older file version which shows pour point of -36C:
https://msdspds.castrol.com/bpglis/...02AB64780257D540060FBE8/$File/BPXE-9P9HK3.pdf

To be honest, I cannot remember how I stumbled on this.
I would go 0W40. It is actually thicker than latest 5W40.