the Pennzoil Platinium 5w-30 SQ,Gf-7 5w-30 is 9.8 @100c and 53.9 @ 40c,,I think the reasoning is the resource conserving ( RC spec) ,the Euro oils do not have the RC spec, and they have a higher hths rating,that is related to the thicker viscosity ,but still in conformance to the J-300 chart...