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,
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,