See alot of chain problems connected to PRESSURE WASHING. It pushes dirt/sand/water past the O-rings inside where you dont want it. Every one is running a good O-ring chain right? If you run in the sand you probably dont need a pressure washer on the chain when your done and a little WD-40 is good to keep it from rusting. Heavier lube attracts the sand. If your chain is all kinked up when your parked you want to change it soon. I run Regina Gold O-ring chain and change the chain and sprockets yearly or sooner if needed. Beats getting damage from a broken chain. Running a case saver helps too. I only run my quads on the sand . I dont ride in heavy mud , I hope some readers on here have some tips for that.