I have a problem with a oil leak where the hose goes in the motor to mix with the gas. I,ve had it in the shop a couple of times but the leak comes back. I hate to see this oil on the basement floor and I sure don,t like to see it in the lake water. My question is, the motor has two alarms, one for the water pump and one for the oil mix. Can I disable the oil mix alarm and just mix my own gas and oil? If so, how do I do this?