Ok. SO were getting the car ready for a trip in December. New tires, new wipers, i changed the oil, new air filter. Now, my parents sometimes tow a camper with the car. Its a mercury villager mini van. It has never had its back shocks replaced and when the camper is on it it sags quite a bit. Its got 90,000 miles onit. When ur in the back seat and you hit a bump, you feel it. Should I have the back shocks replaced. The shocks don't look like they are leaking though. Theres no fluid as far as I can tell. Took a quick glance. I want to order monroe rear shocks or the napa ones for 15 bucks each? Will these be okay? Thanx