No 5w20 A5/B5 oil?

[SlavaB]

Hey bitog.
I noticed that none of the major oil brands have 5w20 A5/B5 oil while all of the 5w30 do have A5/B5.
Knowing A5/B5 helps with fuel dilution, I hoped to grab an A5/B5 5w20 for the next scheduled dealer's maintenance and couldnt find one.
Can anyone explain why a5 is only available in 5w30 flavor?

 

[Bullwinkle007]

Acea is run by the French, they don't usually run 5/20 weight. Typically they use 30 and 40wts

 

[GumbyJarvis]

https://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=2473114

 

[Linctex]

If it were me, I'd just run the 5W-30 A5/B5.

 

[slacktide_bitog]

A5/B5 requires HTHS of at least 2.9, which no 0 or 5w20 can meet.

A1/B1 had an exemption for 0w20 and 5w20, where the minimum was 2.6, but ACEA dropped A1/B1 from the latest sequence and replaced it with C5.

Use a 5w30 A5/B5

 

[Revving2Redline]

Redline Oil 0w20 or 5w20 in A5/B5 AND HTHs 2.9 and 3.0

 

[SubieRubyRoo]

5W30 A3/B4 FTW and more protection!

 

[kschachn]

Originally Posted by Marco620
Redline Oil 0w20 or 5w20 in A5/B5 AND HTHs 2.9 and 3.0

Except of course, Redline is not A5/B5, only "recommended for". Considering that the ACEA doesn't certify or approve anything (it is self-determined) it is especially amusing that they don't even try and make you think that it is A5/B5. but still use the recommended language.

 

[ChrisD46]

In the US , only off the shelf PP5W30 and M1 5W30 list A5/B5 rating ...Castrol , Valvoline and Quaker State to the best of my knowledge do not .

 

[slacktide_bitog]

It's not possible for a 5w20 to meet A5/B5 because it requires HTHS at least 2.9, which is impossible with a 20.

ACEA dropped A1/B1 in 2016

There is a new ACEA C5, which has a provision for 5w20.