Craftsman 6.75 Lawn Mower Oil(Top 5 Best Picks 2025)

Choosing the right oil not only extends the life of your mower but also enhances engine performance.

In this post, we’ll break down what type of oil the Craftsman 6.75 lawn mower needs, when and how to change it, and review 5 top-rated engine oils suited for this mower.

Craftsman 6.75 Lawn Mower Oil

1. Briggs & Stratton SAE 30W Engine Oil

A trusted choice from the engine manufacturer itself, this oil is tailored for small 4-cycle engines like the one in your Craftsman 6.75.

Features:

  • Specifically formulated for air-cooled engines
  • High-temperature protection
  • Helps reduce engine wear
  • Great for mowers, pressure washers, and other outdoor power equipment

2. Honda 10W-30 4-Cycle Engine Oil

Although branded for Honda, this premium 10W-30 oil is compatible with most small engines and provides excellent wear protection.

Features:

  • Multi-viscosity formula for cold and warm weather
  • Ideal for residential and commercial use
  • Advanced additive package reduces carbon buildup
  • Suitable for various outdoor power equipment

3. Royal Purple High-Performance Synthetic Small Engine Oil SAE 10W-30

Royal Purple is known for its synthetic performance oils, and this formula is perfect for those seeking long-term protection and performance.

Features:

  • High film strength reduces engine wear
  • Extended oil change intervals
  • Synthetic base for improved temperature resistance
  • Compatible with gasoline and ethanol-blended fuels

4. Pennzoil SAE 30 Motor Oil

This conventional SAE 30 oil is a cost-effective solution that meets the lubrication needs of small 4-cycle engines.

Features:

  • Keeps the engine clean and protected
  • Meets or exceeds API SN and ILSAC GF-5 standards
  • Designed for warm weather use
  • Suitable for push mowers and other lawn equipment

5. Castrol GTX SAE 5W-30 Synthetic Blend Motor Oil

Castrol GTX offers a synthetic blend that performs well across a wide range of temperatures. It’s a good option if you’re using your mower in colder climates.

Features:

  • Superior sludge protection
  • High temperature and wear resistance
  • Suitable for all-season use
  • Helps extend engine life with advanced additives

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How Much Oil Does the Craftsman 6.75 Mower Take?

The Craftsman 6.75 typically takes about 20 ounces (0.6 quarts) of oil. It’s crucial not to overfill, as this can cause engine problems. Always check the dipstick after adding oil and run the engine for a few minutes to ensure proper circulation.

What Type of Oil Does the Craftsman 6.75 Mower Use?

Most Craftsman 6.75 horsepower mowers are powered by Briggs & Stratton engines, and they typically require SAE 30 oil for optimal warm-weather operation.

However, if you live in a region with varying temperatures, SAE 10W-30 can also be used for improved cold-weather starting. For synthetic alternatives, 5W-30 synthetic oil works well in a broad range of temperatures and may extend oil change intervals.

Key recommendations:

  • Use SAE 30 in temperatures above 40°F.
  • Use 10W-30 in variable temperature conditions.
  • Choose synthetic 5W-30 for best performance in all weather.

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When to Change the Oil

Changing the oil at the right intervals ensures smooth engine operation and helps prevent internal damage. Here’s a basic guideline:

  • New mower: Change oil after the first 5 hours of use.
  • After that: Every 25-50 hours of operation or once per mowing season.
  • Heavy use: More frequent changes may be necessary.

Always check the oil level before each use, and top up as needed.

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How to Change Oil in a Craftsman 6.75 Mower

Changing the oil is a simple process that can be done with a few tools and about 15-20 minutes of your time.

Step-by-step guide:

  1. Warm up the engine – Run it for a few minutes to thin the oil.
  2. Turn off engine and disconnect spark plug – For safety.
  3. Drain old oil – Either through the oil drain plug or by tipping the mower.
  4. Replace the plug and refill – Use a funnel and pour in about 20 oz of new oil.
  5. Check dipstick – Ensure you’re at the correct level.
  6. Reconnect spark plug and run engine – Let the oil circulate for a minute, then recheck the level.

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FAQs

What kind of oil does a Briggs and Stratton 6.75 take?

A Briggs and Stratton 6.75 engine typically uses SAE 30 oil for optimal performance in warmer temperatures. For colder climates or variable weather, 10W-30 or 5W-30 synthetic oil is recommended for easier starts and consistent lubrication.

What oil does a Craftsman lawn mower take?

Most Craftsman lawn mowers with 4-cycle engines use SAE 30 oil in warm conditions. If you’re operating in cooler temperatures or need year-round performance, SAE 10W-30 or 5W-30 synthetic oil is a suitable alternative.

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Can I use SAE 5W30 in my Craftsman lawn mower?

Yes, SAE 5W-30 can be used in Craftsman lawn mowers and is especially effective in colder temperatures. It offers excellent low-temperature starting and good protection across a wide temperature range, particularly when using synthetic formulations.

Should I use 5W30 or 10W30 in a lawn mower?

Both 5W-30 and 10W-30 are acceptable for lawn mowers, but the choice depends on your climate. Use 5W-30 for colder regions as it flows more easily at low temperatures. Use 10W-30 for moderate to warmer climates where cold-starting is less of a concern.

Can I use 10W40 instead of 10W30 in my lawn mower?

While 10W-40 may technically work, it’s generally not recommended unless specified by the manufacturer. The thicker oil can reduce fuel efficiency and may not flow as well in smaller engines designed for 10W-30, potentially leading to increased wear or overheating. Always follow the engine’s recommended viscosity.

Final words

  • Always use fresh oil, never mix old and new.
  • Store leftover oil in a sealed container away from heat.
  • Properly dispose of used oil at an approved recycling center.

By using the right type of oil and maintaining a consistent change schedule, your Craftsman 6.75 lawn mower will continue to deliver top-notch performance season after season. Whether you go for conventional or synthetic, each of the oils listed above provides solid protection and value for your mower’s engine.

George Bill
George Bill

George Bill is a Mechanical Engineer by Profession and an avid gardener and has been mowing his lawn for over 20 years. He has used a variety of different mowers during this time.
George is an expert at maintaining his mowers and over the years, he has learned many tricks and techniques for getting the best results from his mowers and is always happy to share his knowledge on this site.