Hi guys, I have recently started to notice some white smoke out of the exhaust when reving however my coolant has always been at a constant level and my oil is not milky there are however light oil deposits(grime) that form around the headgasket. 2)Could the faulty throttle body be the culprit as I was told it needs to be replaced. I don't wanna go and replace the HG when there's on need. Please advise thanx.

 

almost any radiator shop, can test your coolant for combustion byproducts, which are present, when the head gasket is bad.

might as well confirm or eliminate that possibility, before you go further.