So I have an older grizzly 2001, that I had the motor redone last Jan. Now the valve cover or the head (not sure which) had always had an oil leak, not bad but every 100 miles or so you had to add oil. Even after motor was rebuilt, could not fix the oil issue. I took it back to the guy who rebuilt it, 2 times chasing the leak. He still could not seal it up. Took it to another guy..... Same old same old. One week at m&m powersports & I am happy to say no more oil leak. Thanks again. You guys rock!