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Maintenance Directory

Find Your Generator

Get the exact oil capacity, viscosity chart, and filter part numbers for your model.

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#6251 standby

Generac 8kW Home Standby Generator

1.5 qts
200h
#6998 standby

Generac PowerPact 7.5kW Home Standby Generator

1.2 qts
200h
#7043 standby

Generac Guardian 22kW Home Standby Generator

1.9 qts
200h
#7172 standby

Generac Guardian 10kW Home Standby Generator

1.1 qts
200h
#7210 standby

Generac Guardian 24kW Home Standby Generator

1.9 qts
200h
#7225 standby

Generac Guardian 14kW Home Standby Generator

2.2 qts
200h
#7228 standby

Generac Guardian 18kW Home Standby Generator

2.2 qts
200h
#7290 standby

Generac Guardian 26kW Home Standby Generator

1.9 qts
200h
#GP5500 portable

Generac GP5500

1.1 qts
200h

Generac Oil Capacity Database

Welcome to the comprehensive Measure Flows Generac maintenance directory. We have compiled technical specifications for hundreds of home standby and portable generators. Use this tool to find the exact oil capacity, viscosity recommendations, and filter part numbers for your unit.

Regular maintenance is critical. Most air-cooled Generac units (Guardian Series) require an oil change every 200 hours (or 100 hours for older models), or every 24 hours of continuous use during a major power outage. Always check your dipstick before adding oil.