I've come to a fork in the road.

[G-MAN]

quote:

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Originally posted by MolaKule:
No, you can take Group I base oils with an advanced additive package and meet any EO spec.

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Not from what I've read in the lubricant publications--unless by "additive package" you mean some Group IV or Group V base oil.

 

[BOBISTHEOILGUY]

quote:

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Originally posted by XHVI:

quote:

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Originally posted by MolaKule:
No, you can take Group I base oils with an advanced additive package and meet any EO spec.

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Not from what I've read in the lubricant publications--unless by "additive package" you mean some Group IV or Group V base oil.

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Schaeffers mineral and blends use a group I not a group II.

Many fail to understand, These groups are not #'d in respect to quality which appears many think that if it's group II, it' better than group I. Not true.

 

[G-MAN]

quote:

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Originally posted by BOBISTHEOILGUY:

Schaeffers mineral and blends use a group I not a group II.

Many fail to understand, These groups are not #'d in respect to quality which appears many think that if it's group II, it' better than group I. Not true.

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Bob, Schaeffer's own spec sheets for the 7000 5w30 and Micron Moly 5w30 say they use Group II and Group II+, and the wording of the 10w30 spec sheet ("hydroconverted") would indicate a Group II is used in that blend as well.

The saturate and aromatic specs for a Group II base oil do indicate that it is "better" than a Group I.

 

[BOBISTHEOILGUY]

Sorry, the 5w30 blend is the exception with schaeffers, all the rest are group I according to our chief chemist/cls.

As for the Sat's in schaeffers case, they use >90 unlike the standard group I of =
As for group II being better that is only correct in certain applications. But also in certain applicatins group I is better than group II.

[ December 11, 2002, 08:12 AM: Message edited by: BOBISTHEOILGUY ]

 

[G-MAN]

quote:

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Originally posted by BOBISTHEOILGUY:
Sorry, the 5w30 blend is the exception with schaeffers, all the rest are group I according to our chief chemist/cls.

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That sort of fits in with the point I was making above that for 5wXX oils, a Group II or Group II+ is needed in order to meet the GF-3 specs. (Unless it's a syn blend, in which case Group I and Group IV can easily meet the specs if enough Group IV is added.)