Originally Posted By: Doc_Stressor
HTHS viscosity must be 3.3 at a minimum. Most automotive 30 weight oils are closer to 3.0. See page 21.
Yes, but that's different than what you stated earlier ("to meet FC-W specs, the oil must be blended to a higher viscosity"). Know what meets the FC-W specification? Pennzoil Ultra 10w-30, with a HT/HS of 3.3cP that comes in at 10.5cSt @ 100°C.
HTHS viscosity must be 3.3 at a minimum. Most automotive 30 weight oils are closer to 3.0. See page 21.
Yes, but that's different than what you stated earlier ("to meet FC-W specs, the oil must be blended to a higher viscosity"). Know what meets the FC-W specification? Pennzoil Ultra 10w-30, with a HT/HS of 3.3cP that comes in at 10.5cSt @ 100°C.