Buying an RV? Check the holding tank drain pipes

Here’s a secret your RV salesman won’t tell you. It’s a way an RV manufacturer saves some money and do you a disservice at the same time.

Check out the drain pipes from your holding tanks. Chances are you’ll see a three-inch drain from the sewer tank, but only a 1 1/2 inch drain from the gray tank (shower and sink waste water). Why does this matter? Watch the video. And, yes, it does matter!