I hate to keep asking questions about this car but I cant find any specs or info on this car. Its almost like it didnt exist. Anyway, im running rotella t 10w-30 conventional but im considering a thicker high mileage oil. Its smoking a good bit since i put the rotella in it and I DIDNT over fill it. It wasnt smoking before the oil change. Its a greyish-blue smoke and its prevalent at operating temps. It doesnt smoke period when cold. Im wondering if there are seals worn out (likely) and or piston wrings. I dont have much crank case blow by but it does smell of gasoline. Should I run a high mileage oil? and or go to something a lil thicker? I realize winter is coming....