It si false advertising. Or let's call it what they are: snake oil salesmen.
No more in PAO, three esters and VII? Density and VI are very low for the price, that's true.
With no VII strategy, just polyalkylene glycols it would become >3.5cP if needed.
Don't think they'll answer my question but their main site for the oil doesn't make it an A3/B4: https://www.millersoils.co.uk/wp-content/uploads/2020/12/CFS-0w20-NT.pdf
So, apart from the price and the mistake in the other PDS a serious looking offer. Probably often better than a canned approval >3.5 – even though it's just PAO-ester.
Hello Xxxxxx
Thank you for your e:mail.
You have identified a typing error in our Technical data sheet.
The correct coverage is the old ACEA A1/B1 requirement.
The HTHS of CFS 0w20 NT+ is 2.7 cP
If you need more assistance please get in touch again.
Thanks & best regards
Andy
MILLERS TECHNICAL ¦ ¦ ¦
So is it or isn't it an A3/B4?
Because in the UK they can't claim it and advertise that fact without it being true.
I am glad you know more about oil than Millers.
So how's that working out for you?I can read.
Which means I understand that this is an A3/B4.
Now run along and Email Millers with your expert opinion.
And ACEA Sequence A3/B4 is more than just a viscosity index requirement, no way the other criteria will be met including shear stability and evaporative loss.it's feasible with incredibly high viscosity indexes only.
I'll see what the minimum viscosity index needs to be, and the oil would have to be 100% shear stable, no temporary viscosity loss.
If we assume a 100C viscosity of 9.2 cSt and a density of 0.85 kg/dm2 at 150C, the viscosity at 40C would need to be no higher than 47cSt. That's a modest viscosity index of only 182.
BUT you can't use viscosity index improvers in this example, and that means the viscosity index is incredibly high.
What? Before he came up with this oil that isn't ACEA A3/B4 you mean?Before he came up with this oil it had been called impossible ;-) But of course it's feasible and you know it.
The oil or the company then never needed the derogatory tendencies. And now the continuation looks about as worthless. Come on...
Except we are not talking about monogrades here.monogrades doing that easily ;-)