i recently bought a 90 Comanche, i will be posting pics soon. i noticed that it burns oil and has a leak on the passenger side above the oil filter under the head only in a four inch or so spot. i beleive it also is leaking around the oil pan as it is pretty oilly and kinda drips from the drain plug. is this gonna be a hard job to do? of course i am gonna take the time and do it correctly. thanks for any advice.