I'm surprised to see that the Castrol Blend is almost the same viscosity as their HM product and both are on the higher-side of the 40wt scale.
100°C Viscosity, cSt:
Castrol 10w-40 Blend, 15.9
Pennzoil 15w-40 Blend, 15.6
(PZ does not offer info on a 10w-40 on their web site)
Chevron doesn't offer a 10w-40 blend
Valvoline Durablend 10w-40, 14.0
Comparitively, HM oils:
Castrol 10w-40 HM, 16.0
Pennzoil 10w-40, HM, 15.5
Mobil 10w-40 HM, 14.7
Given the PZ product is not a true 10w-40, the Castrol Blend is quite thick when compared other blends of the same viscosity.
I wonder why Castrol chose to make the HM and blend as essentially the same viscosity??
[ June 18, 2005, 11:16 PM: Message edited by: ToyotaNSaturn ]
100°C Viscosity, cSt:
Castrol 10w-40 Blend, 15.9
Pennzoil 15w-40 Blend, 15.6
(PZ does not offer info on a 10w-40 on their web site)
Chevron doesn't offer a 10w-40 blend
Valvoline Durablend 10w-40, 14.0
Comparitively, HM oils:
Castrol 10w-40 HM, 16.0
Pennzoil 10w-40, HM, 15.5
Mobil 10w-40 HM, 14.7
Given the PZ product is not a true 10w-40, the Castrol Blend is quite thick when compared other blends of the same viscosity.
I wonder why Castrol chose to make the HM and blend as essentially the same viscosity??
[ June 18, 2005, 11:16 PM: Message edited by: ToyotaNSaturn ]
