Keep Your Standby Generator Running Smoothly. Regular Maintenance is the key. You paid a lot for your home Standby Generator, so why not keep it running smoothly with regular oil & filter changes twice a year. Moisture from warm days and cold nights condeses in the crankcase and mixes with the oil. In very bad cases the oil turns a milky white colour and causes extreme wear and tear on the engine. For just a $150 , we service your Generac or Honeywell standby Generator also checking the air filter and test your battery. Same day service for Barrie, Brechin, Beaverton, Oro Medonte, Washago, Gravenhurst, Innisfil, etc Call 905 392 2033 for service more... See more text