Cheap filters ?
There is an old saying that says you get what you pay for. And Fram Filters had a TV commercial years ago portraying an old mechanic showing a bunch of worn out crankshaft bearings and saying: "Bearing job, about $400, (it really was years ago !) Oil Filter, about $8. I don't care, you can pay me now or later..." A R24S retails for around $21 at WM or BoatUS. How much cheaper is the off brand going to be ? And unless you really put in a lot of hours on the engine, you are not going to change the filter more than once or twice per year. As Andy, Stephen and Larry point out, the difference in price is not worth the hassle or the risk. Look for something else to save mobey. Good Luck