I bought a 02 sportsman 700 with 800 miles and 300 hours. Runs great, no smoke, no noises, I noticed my coolant reservoir was empty so checked the radiator and same it was low. Then checked oil and it was really full and milky. I am so bummed. I really thought I got a deal. All works and looks great but now I'm scared. Is this possibly an easy fix or not that expensive like under $400 dealer or diy? Thanks for reading and sharing your opinions.