See smoke and smell burning from front of vehicle after it sits for days on 2003 Jeep Liberty

I had the jeep serviced and the guy said that stuff was dripping on the sensor causing the burning smell and smoke. Said that I should take it to a Jeep Dealer and get repaired. When the vehicle sits for 2-3 days and then I drive it- the first 5 minutes it smells and when I stop I can see a little smoke coming from the front of the vehicle. This has been going on for 2 months.

Asked by for the 2003 Jeep Liberty
So, maybe take it to the Jeep dealer and get it fixed.
I will, just curious how much will it cost and what do you think I need..a sensor? What kind of sensor?
All i can do here is take a wild guess cant see the patrs!! Sounds like maybe the oil sending unit is leaking.
Get a car buddy to LOOK at it for you. What engine do you have??? 2.4 or 3.7.