Mobil 1 15w50 & API "SM" & ZDDP

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Did a search and couldn't find the answers to these questions:

1. Is the latest Mobil 1 15w50 "red cap" API "SM" certified?

2. Do the API SM limits apply to heavy non energy conserving oils?

3. The old API SL rated "red cap" measured 1100 ppm of P and 1300 ppm of Zn. Does the new "red cap" have these same healthy levels of these additives?

Thanks,
 
quote:

Originally posted by 427Z06:
If memory serves, some of the thicker viscosities of oil are exempt from the limitations.

In the past, that's true. But is it true for the new "SM" spec? I'm not sure. I read somewhere they made the SM limits mandatory for all oils regardless of weight. I don't know whether that's true.
 
quote:

Originally posted by MRC01:
Did a search and couldn't find the answers to these questions:

1. Is the latest Mobil 1 15w50 "red cap" API "SM" certified?

2. Do the API SM limits apply to heavy non energy conserving oils?

3. The old API SL rated "red cap" measured 1100 ppm of P and 1300 ppm of Zn. Does the new "red cap" have these same healthy levels of these additives?


(1)

http://www.mobil.com/USA-English/Lubes/PDS/GLXXENPVLMOMobil1_15W-50.asp

API SL,SJ,CF

(2)

http://api-ep.api.org/filelibrary/15techbull3.pdf

"Phosphorus limits of 0.08 max and 0.06 min apply to API SM SAE 0W-20, 0W-30, 5W-20, 5W-30 and 10W-
30 oils. A phosphorus limit of 0.10 max applies to API SJ SAE 0W-20, 5W-20, 5W-30 and 10W-30 oils and API SL SAE 0W-20, 0W-30, 5W-20, 5W-30, and 10W-30 oils. A limit of 0.12 max applies to API SH SAE 5W-30 and 10W-30 oils (SH must be preceded by a “C” category). If CF-4, CG-4, CH-4 and/or CI-4 categories precede SM or SL and there is no API Certification Mark, the limit for phosphorus does not apply."

(3)

The SL is the one still being sold and those levels are in the range for those additives.
 
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