Got underneath Big Green today and saw a film of oil on the front part of the oil pan with some on the transmission lines to the cooler right below- I do not know if this from the last oil change at the dealer when maybe there was some spillage- this was over a month ago- no dripping on the driveway it is just there- do the pan bolts need to be retorqued? Truck was purchased in late December 01 and has 12k miles- Thanks