When it comes to maintaining your Briggs and Stratton engine, using the correct oil type and ensuring the right amount are essential.
Briggs and Stratton engines come in a variety of types, ranging from small single-cylinder engines used in push mowers to large V-twin engines in riding mowers.
Each model has its own oil capacity requirements, which are typically based on engine size (measured in cubic centimeters or cc).
This post guide breaks down everything you need to know to keep your engine running like new. Let’s jump in.
Briggs and Stratton Engine Oil Capacity Chart
Vertical Shaft Engines
| Horsepower Range | Oil Capacity |
|---|---|
| 3.5–3.75 HP | 20 fl oz (0.59 L) |
| 4.0–4.75 HP | 20 fl oz (0.59 L) |
| 5 HP | 22 fl oz (0.65 L) |
| 5–6 HP | 20 fl oz (0.59 L) |
| 5–6.5 HP | 20 fl oz (0.59 L) |
| 6–6.75 HP | 22 fl oz (0.65 L)* |
| 8–11 HP | 36 fl oz (1.06 L) |
| OHV 9–13.5 HP | 48 fl oz (1.42 L)* |
| 12–14 HP | 48 fl oz (1.42 L) |
| 15–16 HP (Single Cyl) | 48 fl oz (1.42 L)* |
| 13.5–17.5 HP | 48 fl oz (1.42 L)* |
| 15.5–17.5 HP | 48 fl oz (1.42 L)* |
| 18–20 HP | 48 fl oz (1.42 L)* |
| 16–23 HP | 48 fl oz (1.42 L)* |
| 22–26 HP | 60 fl oz (1.77 L)* |
*Engines equipped with an oil filter require approximately 4 fl oz (0.12 L) more.
**Intek Snow holds only 16 fl oz (0.47 L).
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Horizontal Shaft Engines
| Horsepower Range | Oil Capacity |
|---|---|
| 0.75–1 HP | 3 fl oz (80 mL) |
| 2.4 HP | 13.5 fl oz (0.4 L) |
| 3.5 HP | 20 fl oz (0.59 L) |
| 4 HP | 20 fl oz (0.59 L) |
| OHV 5–7 HP | 20 fl oz (0.59 L)** |
| OHV 5.5–6.5 HP | 20 fl oz (0.59 L) |
| 6 HP | 24 fl oz (0.71 L) |
| 7.5 HP (2 variants) | 20 or 30 fl oz |
| 8–10 HP | 44 fl oz (1.3 L) |
| OHV 8–11 HP | 28 fl oz (0.77 L) |
| 9 HP | 32 fl oz (1.2 L) |
| 9–11 HP | 28 fl oz (0.77 L) |
| 11–13 HP | 32 fl oz (1.5 L) |
| 11–12 HP | 48 fl oz (1.42 L) |
| 16–23 HP | 48 fl oz (1.42 L)* |
| 18–19 HP | 48 fl oz (1.42 L)* |
*Engines equipped with an oil filter require approximately 4 fl oz (0.12 L) more.
**Intek Snow holds only 16 fl oz (0.47 L).
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Why Oil Capacity Matters
Oil is the lifeblood of any engine. It lubricates the moving parts, reduces friction, dissipates heat, and prevents wear. Overfilling or underfilling your engine oil can lead to serious mechanical problems, including overheating, reduced efficiency, or complete engine failure.
What oil is recommended for Briggs and Stratton engines?
Briggs & Stratton recommends the following oils based on temperature:
- SAE 30: Best for warmer temperatures (above 40°F / 4°C)
- 5W-30 or Synthetic 5W-30: Ideal for colder climates or varying temperatures
- 10W-30: Suitable for wider temperature ranges, but may increase oil consumption
- Synthetic oils (like Briggs & Stratton’s own brand): Improve starting and protection in all weather
Synthetic 5W-30 is often the most universally recommended oil for optimal performance.
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Tips for Checking and Adding Oil
- Use the Dipstick: Insert and remove the dipstick without screwing it in to check oil level.
- Add in Small Amounts: Always add oil slowly and recheck the level to avoid overfilling.
- Change Oil Regularly: For push mowers, every 25 hours of operation is typical. For V-Twin engines, every 50 hours is a good rule of thumb.
Common Mistakes to Avoid
- Mixing Oil Types: Stick to one type per oil change.
- Overfilling: Can cause seal leaks and smoking.
- Using the Wrong Viscosity Affects engine start-up and overall lubrication.
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FAQ
How much oil does a Briggs & Stratton engine take?
The oil capacity of a Briggs & Stratton engine depends on the model and size of the engine. Here’s a general guideline:
- Small push mower engines (3.5–6.5 HP): 20 to 24 oz (0.6 to 0.7 liters)
- Medium-size OHV engines (7–8.75 HP): Up to 48 oz (1.4 liters)
- Large V-twin engines (14–27 HP): 48 to 64 oz (1.4 to 1.9 liters)
What is the recommended oil capacity?
Briggs & Stratton typically recommends:
- 20 oz for engines on walk-behind mowers
- 48–64 oz for riding mower engines or larger OHV engines
The actual capacity will depend on whether the engine has a standard or extended oil sump.
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How much oil does a 14.5 horsepower Briggs & Stratton motor hold?
A 14.5 HP Briggs & Stratton engine generally holds approximately 48 to 64 oz (1.4 to 1.9 liters) of oil. These are usually OHV or V-Twin engines, and oil capacity may vary slightly based on the design and crankcase size.
Check the engine model number (often found on the valve cover or engine shroud) and refer to the operator’s manual for precise information.
What happens if you overfill a Briggs and Stratton engine with oil?
Overfilling your engine with oil can cause several issues:
- White smoke from exhaust due to oil burning
- Engine overheating
- Loss of performance
- Increased oil consumption
- Possible seal and gasket damage from high-pressure
If you suspect overfilling, drain the excess oil immediately and clean any residue around the carburetor and air filter area.
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Final words
Understanding the Briggs and Stratton engine oil capacity chart is key to maintaining your equipment’s reliability and performance. Whether you’re prepping your mower for spring or storing it for winter, the right oil in the right amount makes all the difference.
