0w20 visc > 5w20, but what about shear?

[Silver]

I'm comparing some HM synthetics. Castrol Edge Titanium High Mileage (geez that's a mouthful) has a higher 100c visc than some 5w20 HM oils, which appeals to me. But being a 0W that will spend a lot of time at full temp, will it lose viscosity quicker than the 5W? In other words, will the 100C viscosity drop more in a given period than the 5W will drop?

If there's a spec on the PDS that will tell me this, let me know. Thanks.

 

[dave1251]

It could drop more than a 5W all things being equal. But we know all things are not. The 0W20 could use higher quality base and or VII's. It's nothing I'm personally concerned about.

 

[Silver]

Some of the 5w oils it is thicker than at 100C are PP HM, M1 HM and Motorcraft blend.