Here is a table that shows the recommended oil viscosity for different ambient temperatures:
Ambient Temperature Recommended Oil Viscosity
Below 30°F (-1.1°C) SAE 10W-30
30°F (-1.1°C) to 60°F (15.5°C) SAE 30
Above 60°F (15.5°C) SAE 15W-50
It is also important to use oil that has been certified for use in a Generac engine. This oil will contain the correct additives to help protect the engine from wear and tear.
Here are some tips for changing the oil in your Generac 27 hp engine:
- Be sure to drain the old oil when the engine is warm to allow all of the oil to drain out easily.
- Replace the oil filter at the same time as you change the oil.
- Add the new oil slowly and carefully, and avoid overfilling the engine.
- Start the engine and run it for a few minutes to circulate the new oil.
- Check the oil level and add more oil if necessary.