I'm also thinking that no matter how good an oil, it'll just "raise the bar";-). Honestly though, there's other things going on during start-up that doesn't just involve oil - take part fitment and locally excess temps, like when enguaging a cold engine for service. I bet lower oil viscosities would help protect but I don't see it as an end-all.
AEHass - I get what you mena when thin oil will reach full pressurization at a site faster than if thick, though it may have even drain-off cam lobes as you said. In-line OHC engines might not be effect so much with delay in lobe lubrication as long as the cylinders are pointing up, for what I have seen appears to be a bath of oil that's around level with the tappets. Still this amount can be displaced with the slinging action of the cams...and heaven forbid there be any sludge accumulation.
So it might all come back around to a new balanced wear state in the best kept engines...
AEHass - I get what you mena when thin oil will reach full pressurization at a site faster than if thick, though it may have even drain-off cam lobes as you said. In-line OHC engines might not be effect so much with delay in lobe lubrication as long as the cylinders are pointing up, for what I have seen appears to be a bath of oil that's around level with the tappets. Still this amount can be displaced with the slinging action of the cams...and heaven forbid there be any sludge accumulation.
So it might all come back around to a new balanced wear state in the best kept engines...
