Keep standby generators ready to start in cold weather: block heater checks, coolant condition, oil viscosity for the climate, and diesel cold-flow treatment.
By Jeff Pittman, Independent AMSOIL Dealer · Updated
A cold standby generator depends on a working block heater, healthy coolant, the oil viscosity the maker lists for the climate, and fuel that flows at low temperatures. Check each one before winter.
Block heaters
Block heaters keep coolant and oil warm for fast starts and load acceptance. Check that each heater is working; a failed heater may go unnoticed until a cold start.
Coolant condition
Test freeze protection and coolant condition and match the chemistry the engine maker specifies. Coolant tests can also reveal heater or cooling-system problems.
Oil viscosity for the climate
Use the viscosity range the engine maker lists for the coldest expected temperature, taking the block heater into account.
Fuel that flows
Diesel can gel in cold weather. Work with your fuel supplier on winter blends, and use cold-flow treatment where stored fuel sees low temperatures.
Frequently asked questions
Do standby generators need block heaters?
Many do, especially in cold climates and where fast load acceptance is required. Follow the maker’s and your standard’s requirements.
What oil viscosity is best for a generator in winter?
The grade the engine maker lists for your lowest expected temperature.
How do I stop diesel from gelling in a generator tank?
Use a winter fuel blend from your supplier and cold-flow treatment as directed.
General maintenance information. Always follow your vehicle or equipment manufacturer’s requirements and the current product data. Questions? Email [email protected].
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Related products
Confirm the oil category, viscosity, and approvals in the engine maker’s manual for each generator before ordering. These examples are not a match for a specific engine.
