When I check the oil it smells of gas motor run strong but why would there be gas in the oil?

I THINK THIS TRUCK HAS A MECHNICAL FUEL PUMP LOCATED ON THE ENGINE. IF THE FUEL PUMP IS GOING BAD IT WILL ALLOW FUEL TO ENTER THE OIL .FUEL IN THE OIL CAN BE VERY BAD AS IT NOT ONLY THINS THE OIL BUT THERE IS A DANGER OF THE FUEL FUMES IN THE OIL EXPLODING. DO NOT WAIT TO HAVE THIS CHECKED

Your oil may be breaking down,try a really good oil change with a fram oil filter,recommend that you use castrol 30 weight oil in winter and 40 weight in summer,also add lucas oil treatment in with the oil change,it gives great top of motor lubrication,not like regular oil.fram filters are great too,they won't fold under pressure like a cheap one would.when you refine oil,it turns into gas.if you've been using a quick oil change place,stop. find a mechanic that can change your oil. you go to parts store,purchase an oil change kit with 30 weight castrol oil,tell them you want to add lucas oil treatment in on the oil change and have them look up your engine to see how many quarts of oil it takes,make sure they know that you want to add the lucas in on the oil change so you don't overfill the oil.after you've purchased the oil change kit,then go to your mechanic with your supplies and have them change your oil.after you've done this once,you'll do it all the time.quick oil change places buy their oil in bulk and as cheap as possible,then charge you for quality products.they break down quicklyand add very little lubrication to your engine.thank you for choosing fixya.com