I have a 97 Jeep Cherokee sport 4x4, 4.0. When Im towing my popup camper and going up steep hillls my jeep will blow out alot of oil. It looks as if it is comming from the oil filter. But the oil filter is tight. Then when I checked the oil level it was a quart over. It only does this when Im towing my popup, not at all during normal driving conditions. Where is the oil blowing out from and why? Anyone?