Ok I have an oil leak on the rear drivers side of the engine. There is oil marks all over the left side all the way back to the transfercase skidplates so its a really bad leak. In the past 2 weeks a huge puddle formed undernieth the truck. It looks like its coming from the last cylinder in the exhaust manifold. I can tell its not coming from the top of the engine just from the side I'm hoping its not a head gasket but I think it might be. any help would be appreciated.
