Suzuki DF70 Oil & Filter Change
Fresh oil and a new filter are the cheapest insurance for your 70 hp Suzuki DF70. Below is the exact oil filter that fits, a step-by-step video of the full oil change, and what else you need for the job.
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Watch: how to do it (step by step)
How to Replace Oil Filter – Suzuki DF70
Suzuki Outboard Oil Change (DF70A)
Tools Needed
- 8-mm Allen wrench
- Oil filter pliers
- Funnel
- Rags
- Fill bucket
Safety
- Ensure the engine is cool before starting the oil change.
- Wear gloves to protect your hands from oil and debris.
Steps
- Locate the drain plug on the right side of the engine, halfway down to the lower unit.
- Using an 8-mm Allen wrench, crack and remove the drain plug to allow the oil to drain.
- While the oil is draining, place rags under the oil filter to catch any oil or debris.
- Remove the old oil filter using oil filter pliers, as it is located in a difficult spot.
- Lubricate the seal of the new oil filter with a small amount of oil.
- Thread the new oil filter into place by hand, ensuring it is tight but not overly tight.
- Once the oil has finished draining, replace the drain plug and tighten it securely.
- Fill the engine with oil, using a funnel to pour in 4.2 US quarts (1 gallon) of 10W-40 four-stroke marine oil.
- Check the oil level using the dipstick, located on the right side of the engine with a yellow tab.
- Start the engine and let it run for a few seconds to ensure the oil passes through the system.
- Turn off the engine and allow it to settle for a few seconds before checking the oil level again.
Tips
- Use old oil filter pliers to help loosen the oil filter, as it is difficult to access.
- Be cautious not to overtighten the oil filter or drain plug, as this can cause issues during the next oil change.
- Check the oil level frequently while filling to avoid overfilling the engine.
Which part do I need for my Suzuki DF70?
For most DF70 owners the part above (18-7896) is the right choice. Price tip: the aftermarket numbers are usually noticeably cheaper than the OEM-branded box — it is the same physical part. If you need an exact match, these compatible part numbers also fit:
Show all compatible part numbers (4)
| Part number | Description | |
|---|---|---|
| 16510 | Oil filter | Find on Amazon → |
| 503353 | Oil filter | Find on Amazon → |
| 778886 | Oil filter | Find on Amazon → |
| Johnson/Evinrude 778886, 5033539 | Oil filter | Find on Amazon → |
Many of these are the same physical part under different brand numbers. Confirm against your engine plate before ordering.
Frequently asked questions
What oil filter fits a Suzuki DF70 (70 hp)?
The Suzuki DF70 uses the oil filter sold as 18-7896, plus its OEM and aftermarket cross-references (4 compatible numbers are listed above). Confirm the number against your engine's model code and year plate before ordering.
How often should I replace the oil filter on a Suzuki DF70?
Change the oil and filter every 100 running hours or once a season, whichever comes first (check your manual for the exact interval).
What else do I need for an oil change on a Suzuki DF70?
The correct grade and amount of engine oil (see the manual or the video), a new drain-plug washer, a filter wrench and a drain pan or oil extractor pump. Nothing exotic — it is standard service equipment.
What are the signs the oil is overdue on a Suzuki DF70?
Dark, gritty oil well past its interval, low-pressure warnings — and milky or grey oil, which means water is getting in and should be investigated immediately.
How long does an oil change take on a Suzuki DF70?
About an hour for a competent DIYer. Run the engine warm first — warm oil drains faster and carries more contaminants out with it.
Related guides
- Suzuki DF90 oil filter
- Suzuki DF60 oil filter
- Suzuki DF140 oil filter
- Suzuki DF9 oil filter
- All Suzuki maintenance guides
- Free Suzuki boat valuation
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