Truck Leaves Blue Smokey Haze on Hwy......

[ashx2]

When I bought my truck and drove it home from Oklahoma, I never noticed any blue smokey haze in my rearview or side mirror. Now, several months later, when I take it onto the hwy, I see the blue haze behind me.

I'm not sure what the PO was using for oil, but I've been using Castrol 10w-30. Now I'm beginning to wonder if that's the reason for the smoking or could it be something else? Nothing else is making any noise or vibration of any kind, so I'm a little puzzled. Not to mention, it's embarrising for my classic to be leaving that kind of haze for others to see or drive through.

Anybody have any ideas or similar experiences?

Thanks,
Greg