Is it possible to make a low SAPS w20?

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I know this is a dumb question but why are there no low saps Xw20 oils out there? I don't see how the two would be related but I figured I might as well ask in case others were wondering.

I'd really like to find a low SAPS 0W20.
 
I don't see why not.

The reason why you're not seeing them right now is that the car manufacturers that require low SAPS oils in their engines also require the HT/HS viscosity to be pretty high (3.5 cP or above), and I don't know of any 0w-20 oil that could have HT/HS viscosity this high.

There may be some specs out there that call for low SAPS and low HT/HS, but nothing comes to mind at the moment...
 
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