I have an 05 bayou 250, and the bottom of the engine near the oil drain plug has recently been cracked, causing oil to pour out occasionly. Everytime we go riding, we make sure the oil level is good, and we keep a bottle of oil with us. The problem is that since it's been cracked, the bayou has had a very low top speed, and hardly any power. it probably hits 30-32 MPH, instead of the normal 45. there was a major decrease in speed. Anyhelp will be greatly appreciated.