I'm freaking out alittle here its a slow leak but its worrying me as its leaking sitting in our drive way the oil is not low nor is it coming from the transmission side. theres alot of gunk on the outside of the engine and i hope thats just melting off because its dark oil and i had an oil change 500 miles ago. anyways i can see a wet spot on the far side of the engine block near all the belts near the oil pan. any common hopefully cheap leaks on the 3100?