Sometimes when I get out of my 38,000 miles 2005 XC 70 miles after driving, I can smell burnt oil coming from the engine area. I change my own oil (very fussy and enjoy it), so I see the underside of the engine without the belly pan. I can see no oil leaks nor do I leave any oil spots when parked. I keep hearing about turbo return line - need some opinions.

Still have waranty time left but like to know prior to returning to the dealer.

Thanks