Originally Posted By: Garak
Originally Posted By: jrustles
Does the Full Synthetic 5w30 meet ACEA A3/B4? 229.3? LL-01/03 or does it require purchasing an even more expensive, redundant grade positioned at
actually "exceeding the industry's toughest standards".
There's nothing redundant about it. Normal M1 5w-30 is SN/GF-5 and is ACEA A1/B1 and A5/B5. Those ratings are mutually exclusive of A3/B3, A3/B4, LL-01/03, and so forth.
An A3/B3 5w-30 is as forbidden in my G37 from a manufacturer's warranty perspective as much as normal M1 5w-30 would be in a new Audi. So, there's no redundancy.
As for SN/GF-5, no, not oils have to meet that. Plenty of HM oils historically have not. 10w-30 HDEOs tend to be CJ-4/SM, and are never SN/GF-5, whereas 10w-30 PCMOs certainly can be. Any oil company can shoot for whatever target they want for certification, assuming the oil actually meets them, or they can choose to forgo certification altogether.
And your take on the North American market is correct. Look at the fuss that dexos1 caused. How well do you think it would go over if every North American and Japanese automaker went beyond SN/GF-5 and asked for ACEA A1/B1 A5/B5 on top of it? Of course, without extending the OCI, it would be pretty pointless and counterproductive, but that's another issue.
While CAFE is certainly an issue in North America, don't think that everyone in Europe is running an A3/B3 or A3/B5 in every vehicle on the road. There are several other ACEA sequences.
I get what you're saying, OVERKILL pretty much covered those points.
I still think redundancy is a big problem.
For instance why do we have M1 and M1 EP? They don't meet any dramatically different specs or perform much differently, so why do we need M1 Limited Performance Why not make it all EP? I'm sure people would love that.
XOM's modus is par for the course, though.
SOPUS, BP guilty as well..
PP and PU? Why? GrV GTL performs better, cleaner than GrIII, yet the costs are really similar, considering Shell has plenty of capacity at it's Pearl facility. Ultra isn't even advertised as a Long Drain oil, so the differences are barely distinguishable. Is it just about deposits? Why do we need synthetic Pennzoil Not-as-good-as-it-could-be? Are the profit margins on PU just too sweet of a plum?
Castrol's actually kind of given up having merged the Syntec/Edge campaigns- distinguishing them by "Syntec" technology (grIII) and Titanium technology, whatever that is. GrIII+Ti additive?
I can only extrapolate this to oils of the same grade, why do we need so many variants of a single SAE grade? Why do we need 5w30 "Resource Conserving" low HTHS and 5w30 high HTHS?
What's up with changing the verbage from Energy Conserving to Resource Conserving? Does 'resource' refer to 'cost'??
It makes no sense to me to have two performance rating systems that theoretically report, or at least suggest the same thing, oil thickness/film strength, yet are hardly congruent. The real grading factor, is the one that's "occult", HTHS, and the grading system the consumer abides by, SAE KV, is a fallacy.
If you need a low drag oil for fuel economy/CAFE, choose (or specify) a suitable grade ie. Xw20, Xw16. An EC API SN 5w30 doesn't need to pretend to be a 5w30 while performing virtually identical to a 5w20, instead of like a higher HTHS rated 5w30. At least some more SAE grades are being defined, and the cSt ranges are being chopped, but I don't see 'fake' 5w30 EC's going anywhere anytime soon.
With the issue of temporary/permanent shear it seems that KV means virtually nothing to an engine. Bulking up a low viscosity base oil with VIIs in the hopes of creating the illusion of a SAE 30 9.3cSt - 12.3cSt@100C in the Ford cup or "ball drop" test is pointless IMO. It would be fine if engines had small balls in tubes of oil at a controlled temperature that needed to drop slowly by the force of gravity at a certain rate, but when the hydrodynamic bearing is going to perform at a SAE 5 to 20 grade at best in the bearing/cam lobe or piston ring at 70+ feet per second, the SAE rating becomes totally irrelevant. The API Energy Conserving scheme just seems like a joke, and has done nothing but muddy and obscure the rating scheme. To get away with it, by relying on additives to take over when the film rips is not the ideal solution IMO, despite the fact that most motorists tooling around don't notice any of this happening.
but alas the inadequacy of, and disdain towards the SAE viscosity grading nomenclature is well known on BITOG, isn't it?