If a oil now has a dual rating of SN plus GF-5 does it make for a better oil ? If so why in your opinion ? I was prompted to ask due to new formulation of M1 0W30 oils now being advertised as being reformulated to meet SN plus GF-5 ratings ...
Dual Rated SN & GF-5 Oils Better ?
- Thread starter ChrisD46
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It's likely "better" if your car needs either one of those two specifications. Otherwise, on an older car that ran just fine on SM/GF-4, it's nice and not necessary.
Originally Posted By: A_Harman
No. SN is identical to GF-5.
I don't know the answer, but there must be some differences between SN and GF-5. For example, in our RX, I run the Pennzoil HM 5W30. According to Pennzoil, all Pennzoil® motor oils, conventional or synthetic, will be reformulated to exceed the new ILSAC GF-5 / API SN specification (except Pennzoil High Mileage Vehicle, which will be API SN only).
No. SN is identical to GF-5.
I don't know the answer, but there must be some differences between SN and GF-5. For example, in our RX, I run the Pennzoil HM 5W30. According to Pennzoil, all Pennzoil® motor oils, conventional or synthetic, will be reformulated to exceed the new ILSAC GF-5 / API SN specification (except Pennzoil High Mileage Vehicle, which will be API SN only).
http://www.gf-5.com/uploads/File/API SN Discussion.pdf
"API SN, when licensed with Resource Conserving, is equivalent to ILSAC GF-5." But you can have API SN without RC:
"API SN with Resource Conserving is equivalent to ILSAC GF-5. In contrast,
API SN does NOT require
* Sequence VID Fuel Economy
* Sequence IIIGB Phosphorous Retention
* TEOST 33C
* Emulsion Retention"
robert
"API SN, when licensed with Resource Conserving, is equivalent to ILSAC GF-5." But you can have API SN without RC:
"API SN with Resource Conserving is equivalent to ILSAC GF-5. In contrast,
API SN does NOT require
* Sequence VID Fuel Economy
* Sequence IIIGB Phosphorous Retention
* TEOST 33C
* Emulsion Retention"
robert
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