http://www.imakenews.com/lng/e_article000351473.cfm?x=b16kqbNJ,b16kqbNJ,w
Quote:
All, except for Mobil 1 Extended Performance, are API licensed for the most current categories, ILSAC GF-4 and API SM. Mobil 1 Extended Performance is not currently licensed because it does not meet the fuel economy requirements of GF-4 as measured by the Sequence VIB engine test. It does, however, meet the engine durability and protection requirements of the specification. The company said it is doing a considerable amount of work to meet the fuel economy requirements while retaining the 15,000-mile guarantee. “Technically its doable,” said Olszewski, “We’re well under way and expect to get there.”
They later approved it for GF-4. Mobil 1 EP is currently GF-5/SN, so it also meets the fuel economy requirements.
I'm not sure some of the smaller blenders that claim they are predominantly Group IV based and use little/no VM'ers meet the VIB test. That could be one reason why they are not licensed. It's a trade off. Oils like Redline and some of Amsoil's would probably not meet it, but on the upside you get a more shear stable oil.
Is Edge still a 15k mile oil?
Quote:
All, except for Mobil 1 Extended Performance, are API licensed for the most current categories, ILSAC GF-4 and API SM. Mobil 1 Extended Performance is not currently licensed because it does not meet the fuel economy requirements of GF-4 as measured by the Sequence VIB engine test. It does, however, meet the engine durability and protection requirements of the specification. The company said it is doing a considerable amount of work to meet the fuel economy requirements while retaining the 15,000-mile guarantee. “Technically its doable,” said Olszewski, “We’re well under way and expect to get there.”
They later approved it for GF-4. Mobil 1 EP is currently GF-5/SN, so it also meets the fuel economy requirements.
I'm not sure some of the smaller blenders that claim they are predominantly Group IV based and use little/no VM'ers meet the VIB test. That could be one reason why they are not licensed. It's a trade off. Oils like Redline and some of Amsoil's would probably not meet it, but on the upside you get a more shear stable oil.
Is Edge still a 15k mile oil?