Snow Blower Oil: Which Type to Use and How to Change It
Snow Blower Oil: Which Type to Use and How to Change It
In This Guide
Snow blower oil is not the same choice as lawn mower oil, because a snow blower runs in freezing temperatures where a summer weight oil turns thick and starves the engine at startup. The grade matters more here than almost anywhere else in small engine care. This guide explains which oil a snow blower needs, why cold weather changes the answer, and how to change it yourself in about fifteen minutes. Note that this is a separate question from mower oil, so if you also service a mower, read our oil pages for each machine rather than assuming one grade covers both.
Why Snow Blower Oil Is Not Mower Oil
A lawn mower runs in summer heat, where a thicker oil like SAE 30 protects a hot engine. A snow blower runs in the cold, where that same SAE 30 thickens into something close to syrup and will not flow through the engine on a freezing morning. That is why snow blowers call for a multi grade oil that stays fluid at low temperature. If you change oil in both machines, treat them as two different jobs. Our lawn mower oil change guide covers the warm weather side, and this page covers the cold.
Which Oil Grade to Use
Match the grade to how cold your winters get:
- 5W30 is the default for most snow blowers and works in typical winter temperatures.
- Synthetic 5W30 flows better on the coldest mornings and is the top choice for two stage machines that see hard use.
- 0W30 or 0W40 synthetic is worth it in deep cold climates that regularly drop below zero.
Always check the engine manual or the label near the oil fill for the exact grade your model specifies. When in doubt, a full synthetic 5W30 is a safe choice for nearly every gas snow blower.
How Much Oil a Snow Blower Holds
Capacity depends on the engine, not the brand of the machine. Small single stage engines hold around 16 to 20 ounces, while larger two stage engines hold 20 to 24 ounces or a bit more. Never fill by the bottle. Fill partway, check the dipstick, and add slowly to the full mark. Overfilling causes smoking and can push oil past the seals.
How to Change Snow Blower Oil Step by Step
When to Change It
Change the oil after the first five hours on a brand new machine to clear the break in debris, then once every season or every twenty five hours of use, whichever comes first. Fresh oil at the start of winter is one of the cheapest ways to protect a snow blower engine, and it pairs naturally with the fuel and storage steps at each end of the season.
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