Volvo Penta OEM Marine Engine Oil 21681794
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Volvo Penta OEM Marine Engine Oil — Part No. 21681794
This is the genuine OEM Volvo Penta marine engine oil formulated to factory specifications for compatible Volvo Penta gasoline and diesel marine engines. Designed specifically for the demands of marine operation — including saltwater exposure, high-load running, and extended idle periods — this oil provides the wear protection, thermal stability, and corrosion resistance that Volvo Penta engineers into their lubrication requirements.
If your Volvo Penta service manual or parts lookup specifies 21681794, this is the correct oil.
Product Details
- Part Number: 21681794
- Brand: Volvo Penta (OEM)
- Official Product Type: OEM Marine Engine Oil
- System: Engine lubrication
- Supersedes: Confirm via Volvo Penta serial-number lookup — earlier references may have been consolidated into this part number
- Replaced By: Confirm via current Volvo Penta parts catalog
Compatible Applications
Use only where Volvo Penta part number 21681794 is specified. Always verify the correct oil grade and specification against your engine model and service manual before ordering.
- Compatible Volvo Penta gasoline marine engines
- Compatible Volvo Penta diesel marine engines
- Sterndrive and inboard applications where this OEM oil reference is specified
Key Features
- Genuine OEM Volvo Penta formulation — meets factory lubrication specifications
- Superior wear protection for marine engine internals under load
- Excellent thermal stability for high-temperature and extended-run operation
- Corrosion resistance for both saltwater and freshwater environments
- Maintains viscosity across a wide operating temperature range
- Formulated to protect against sludge and deposit buildup in marine duty cycles
Service Interval
Change engine oil at the interval specified in your Volvo Penta service manual — typically every 100–150 hours or annually, whichever comes first. Also change after any contamination event, extended storage, or when oil appears dark, milky, or has a burnt smell. Always replace the oil filter at every oil change.
Installation Notes
- Confirm the correct oil grade and specification for your engine model before filling
- Always replace the oil filter at the same time as the oil change
- Drain fully before refilling — do not top up old oil with new
- Check the dipstick after filling and run the engine briefly to circulate oil before rechecking the level
- Dispose of used oil responsibly at a certified marine or automotive recycling facility
Related Parts
- Volvo Penta Oil Filter — 21549542
- Volvo Penta Oil Filter — 3517857
- Volvo Penta Oil Filter — 835440
- Volvo Penta Oil Filter — 841750
- Volvo Penta Oil Filter — 861475 / 21549544
- Volvo Penta Transmission Oil — 1141680
- Volvo Penta Marine Sealant Black RTV Silicone — 1161277
Technical FAQ
Can I use a standard automotive engine oil instead of the OEM marine oil?
Automotive oils are not formulated for the specific demands of marine engines — including higher sustained RPM, saltwater corrosion exposure, and the absence of a catalytic converter (which affects additive packages). Volvo Penta OEM oil is the safest choice for protecting your engine and maintaining warranty compliance.
How do I know what viscosity grade this oil is?
Confirm the viscosity grade and specification in your Volvo Penta engine service manual or by cross-referencing part number 21681794 in the Volvo Penta parts catalog for your engine model and serial number.
Should I change the oil filter at every oil change?
Yes — always replace the oil filter when changing engine oil. A used filter can reintroduce contaminants into fresh oil and reduce the effectiveness of the oil change.
What if my oil looks milky after draining?
Milky oil indicates water intrusion — a serious condition that requires immediate inspection of the cooling system, head gasket, and any potential water ingestion points before returning the engine to service.
Parts Desk Insights
Best use case: This is the right oil for scheduled engine oil changes on compatible Volvo Penta marine engines where the service manual specifies part number 21681794. It’s a straightforward maintenance item that pairs with a matching Volvo Penta oil filter for a complete OEM oil service.
Common customer questions: Customers frequently ask whether any marine engine oil will work — the answer is that Volvo Penta specifies particular oil grades and formulations by engine model, and using the wrong oil can affect engine protection and warranty standing. Always match the part number to your service manual rather than selecting by oil type alone.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
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We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
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Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
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