lol... How bad is the leak. Putting the worng type of oil in it. Isnt going to help much if its going to leak out in a day lol. Is it seeping out or pouring out.?
My mustang had a oil pan gasket leak....Dealer fixed it for free since I bought the car like 2 weeks earlier...-.-
At fist I thought it was the rear main seal, I took it to the dealer, they done all their test, and turns out it was the oil pan, hopefully thats all it is for you too.
Bill was $800 If i had to pay.
Parts were less than $30..
Try adding some leak stop to your oil, it worked for my Honda long enough to get it a new car.