I am looking at purchasing another truck and have some concerns, its a 1997 with a 7.3, it has 362,xxx, the truck was last licensed in 06, an has only been driven around the yard, but not very often. the truck starts, but not as easily as my 97, and when its idiling, it has a light constant blue haze from the exhaust, and when i pulled the dipstick up, it had smoke coming from there, and the oil cap, and also looked like some from around the CCV. Any ideas how bad this stuff is? The oil did smell pretty bad.