I have had a crank case blow by tube leak for a few months now. I never thought much of it until i noticed oil on my tailgate and near the rear tires. The truck runs fine, minus adding oil every now and then and doesnt spit nor sputter at idle. I see a slight oil protrusion between the turbo and the exhaust manifold. I drove it to the store the other day and it was smoking a little more than usual. I thought maybe it was because of the frigid Colorado temps and continued driving. I stepped out and with the turbo timer keeping the truck running i could smell burnt oil. Should I assume that i have lost compression or possibly cracked a piston?