Maintaining the right oil level in your Briggs & Stratton engine is one of the most important steps in keeping it running smoothly for years. For the popular 17.5 HP models, knowing the exact oil capacity and how to manage oil changes is essential for performance, efficiency, and longevity.
17.5 HP Briggs & Stratton Engine Oil Capacity
17.5 HP Briggs & Stratton vertical-shaft OHV engines have an oil capacity of 48 fl oz (1.42 liters). If your engine has an oil filter, you’ll need to add an extra 4 fl oz (0.12 liters) to account for the additional space.
This means:
- Without oil filter: 48 fl oz (1.42 L)
- With oil filter: 52 fl oz (1.54 L)
Using the correct amount ensures optimal lubrication and prevents issues that can occur from overfilling or underfilling.
Related Briggs and Stratton Engine Oil Capacity Chart(For All Models)
Best Engine Oil For 17.5 HP Briggs and Stratton
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1. Briggs & Stratton SAE 5W-30 Synthetic Small Engine Motor Oil
A fully synthetic oil designed for small engines, offering excellent cold-start performance and consistent protection across a wide temperature range. Ideal for areas with variable climates.
2. Briggs & Stratton 5W-30 Full Synthetic Engine Oil Change Kit
A complete oil change kit that includes two quarts of 5W-30 synthetic oil, a genuine Briggs & Stratton oil filter, fuel treatment, and an absorbent pad, perfect for a thorough service.
3. Briggs & Stratton SAE 30W Engine Oil
A traditional straight-weight SAE 30 oil suitable for warmer weather, providing reliable lubrication and protection during hot operating conditions.
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Why Oil Capacity Matters
Oil isn’t just a lubricant, it plays a major role in engine health. The right oil level ensures:
- Proper Lubrication: Reduces wear and tear on moving parts.
- Temperature Control: Helps dissipate heat during operation.
- Clean Operation: Carries dirt, carbon, and other contaminants to the filter.
- Longevity: Protects internal components, extending the life of the engine.
Incorrect oil levels can cause excessive smoke, loss of power, or even engine damage.
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Recommended Oil Types
Choosing the right oil type is just as important as getting the capacity correct. Briggs & Stratton recommends:
- SAE 30: Best for warm weather use (above 40°F / 4°C).
- 5W-30: Suitable for cold climates and easier starts in low temperatures.
- Synthetic 5W-30 or 10W-30: Works well across a wide temperature range and offers enhanced engine protection.
Synthetic oils also resist breakdown better than conventional oils, making them a good choice for heavy use or extreme conditions.
When to Change the Oil
The ideal oil change schedule depends on your mower type and usage:
- Walk-behind mowers: Every 50 hours or once a year.
- Riding mowers: Every 100 hours or once a year.
Always check your oil before each use, and change it more frequently if you operate in dusty or hot conditions.
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Step-by-Step Oil Change Guide for the 17.5 HP Briggs & Stratton Engine
1. Warm the Engine
Run the engine for 2–3 minutes to warm the oil. This helps it drain faster.
2. Turn Off and Cool
Switch off the engine and let it sit for about 10 minutes so the oil can settle.
3. Drain the Oil
Place an oil catch pan beneath the drain plug, remove the plug, and let all the oil flow out.
4. Replace the Oil Filter (If Equipped)
If your engine has a filter, remove the old one, apply a light coat of fresh oil to the new filter’s gasket, and screw it on snugly by hand.
5. Refill with Fresh Oil
- Without filter: Pour in 48 fl oz (1.42 L).
- With filter: Pour in 52 fl oz (1.54 L).
6. Check the Level
Insert the dipstick without screwing it in, check the level, and adjust as needed.
7. Run and Recheck
Start the engine for a minute, turn it off, and check the oil again. Top up if necessary, but never overfill.
8. Dispose of Used Oil Properly
Take old oil to a recycling center or an auto parts store that accepts waste oil.
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Common Mistakes to Avoid
- Overfilling: Can cause foaming, poor lubrication, and smoking.
- Underfilling: Leads to insufficient lubrication and engine wear.
- Using the Wrong Oil: The wrong viscosity can make starting difficult and reduce protection.
- Skipping Oil Changes: Dirty oil loses its ability to protect the engine.
FAQs
How much oil do my 17.5 HP Briggs and Stratton take?
A 17.5 HP Briggs & Stratton engine typically holds 48 fl oz (1.42 liters) of oil without a filter and 52 fl oz (1.54 liters) with a filter.
How much oil does a Briggs & Stratton engine hold?
The oil capacity depends on the model and size. Smaller walk-behind mower engines may hold around 15–20 fl oz, while larger riding mower engines like the 17.5 HP model hold 48–52 fl oz.
Can I use 5W-30 instead of 10W-30 in my lawn mower?
Yes, 5W-30 can be used and is especially beneficial in cold climates for easier starting. Always check the manufacturer’s recommendations for your engine.
How many cc is a 17.5 HP Briggs and Stratton engine?
A 17.5 HP Briggs & Stratton engine typically has a displacement of around 500–540 cc, depending on the specific model.
How much oil does a 15.5 HP Briggs and Stratton hold?
Most 15.5 HP Briggs & Stratton engines have the same oil capacity as the 17.5 HP models, 48 fl oz without a filter and 52 fl oz with a filter.
Final words
The 17.5 HP Briggs & Stratton engine is built for reliability, but like any machine, it needs proper care. By knowing the exact oil capacity, 48 fl oz without a filter or 52 fl oz with a filter, and using the correct oil type, you can keep your engine running smoothly for years. Regular oil changes, the right maintenance routine, and attention to oil levels will protect your investment and ensure your mower is always ready to work.
