19,890 satisfied customers
Specialities include: Automotive Mechanic, Small Engine Repairs, Auto Body Repairs, Diesel Engine Repairs
Hello and welcome to justanswer.com
Sounds like you have an oil pan gasket leaking. The gasket is metal with rubber seals that do wear out. An oil additive will not help this as you just need to make sure the oil level if full. As far as the cost this does seem high if infact the oil pan gasket is the part that needs to be replaced. The gasket is about $40.00 and the labor to replace it is about 5 hours.
19,890 satisfied customers
Ellen
Licensed mechanics