Hello again. I thought that I should look into this before I blow my motor. My 5HP Briggs & Stratton is burning oil at a fast rate. In about an hour and a half of light use, it burns 8-12 oz. It lets out a HUGE cloud of blue smoke that follows me around. It smokes in reverse, going up an incline, and when the deck is engaged. My yard is blue the entire time I am mowing. Too bad the black flies and mosquitoes are already gone. I noticed that the crankcase gasket has been leaking. Could this be the cause? Or might it need rings? Here is the engine info: Model: 130902 Type: 1177 01 Code: 87040110. Thanks in advance for your help!