AMSOIL Formula 4 Stroke 10w30 and 10w40
Synthetic Marine Oils
Certified by the National Marine Manufacturers Association
NMMA FC-W for use in 4 Stroke Outboard Motors
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AMSOIL Formula 4 Stroke 10w30 and 10w40 Synthetic Marine Oils are a premium quality synthetic oil formulations engineered for the harsh operating conditions of marine engine environments. They withstand the intense mechanical action of continuous, high RPM operation to deliver superior viscosity protection. AMSOIL Formula 4 Stroke Synthetic Marine Oils are specially fortified with a heavy treatment of advanced additives that protects motors against rust, wear, and deposits. They excel in both high horsepower applications and all-day trolling conditions.
AMSOIL Formula 4 Stroke Synthetic Marine Oils are recommended for gasoline fueled 4 stroke outboard, inboard, inboard/outboard (I/O) and PWC (personal watercraft) motors:
Excellent for use in 4 stroke outboard motors including: Bombardier BRP, Honda, Johnson Evinrude (BRP), Mercury, Nissan, Suzuki, Tohatsu and Yamaha
Excellent for use in marine inboard engines including: Chevrolet, Chrysler Marine, Crusader, Ford, GM, Marine Power, MerCruiser (Mercury), OMC and Volvo Penta
Recommended for use with PWC (personal watercraft) including: Sea-Doo (BRP), Honda, Polaris and Yamaha
NMMA Registration
#FB-30011B 10w30
NMMA Registration
#FB-30010B 10w40
NMMA Certified FC-W Oil
AMSOIL Formula 4 Stroke Synthetic Marine Oils are certified by the National Marine Manufacturers Association (NMMA) for use in 4 stroke outboard motors. These high-quality oils demonstrate outstanding performance, exceeding the NMMA FC-W (Four Cycle-Water) specification requirements. AMSOIL Formula 4 Stroke Marine Oils fulfill the warranty requirements of 4 stroke outboard motor manufacturers.
- Formulated specifically for use in 4 stroke gasoline engines used in marine applications — outboard, inboard, inboard outboard (I/O) and PWC (personal watercraft)
- NMMA FC-W approved and "Warranty Certified"
- Excellent protection against engine rust
- Offers unsurpassed wear protection and viscosity stability
- API SL, FC-W
- Product Code/Price
- Product Details
- Shipping Info/Return Policy
| AMSOIL Formula 4 Stroke 10w30 Synthetic Marine Oil | |
|---|---|
Product Code |
Pkg./Size |
| WCTQT-EA | Quart Bottle |
| WCTQT-CA | Quart Bottles (case of 12) |
| WCT30-EA | 30-Gallon Drum |
| WCT55-EA | 55-Gallon Drum |
| Wholesale prices available for retail and commercial accounts. Please call 1-877-331-4642 or e-mail info@superoilcentral.com for more information. |
|
| AMSOIL Formula 4 Stroke 10w40 Synthetic Marine Oil | |
|---|---|
Product Code |
Pkg./Size |
| WCFQT-EA | Quart Bottle |
| WCFQT-CA | Quart Bottles (case of 12) |
| WCF30-EA | 30-Gallon Drum |
| WCF55-EA | 55-Gallon Drum |
| Wholesale prices available for retail and commercial accounts. Please call 1-877-331-4642 or e-mail info@superoilcentral.com for more information. |
|
Excellent Anti Rust Performance in Marine Engines
Marine engines are prone to rust, leading to uncontrolled wear and premature engine failure. However, good rust protection is not natural to engine oil. It comes only by design. AMSOIL Formula 4 Stroke Synthetic Marine Oils are fortified with a special anti-rust agent, even more than required to pass stringent NMMA FC-W anti-rust test.
Superior Protection Against Engine Wear
Marine engines operate under high loads and RPMs for extended periods of time, causing traditional automotive oils to break down and lose viscosity. While automobile engines normally operate at around 2,500 rpm, outboard motors can run twice as fast, requiring greater levels of wear protection and better bearing durability than automobiles. To ensure good protection, the NMMA set minimum shear stability requirements for FC-W. AMSOIL Formula 4 Stroke Synthetic Marine Oils greatly exceed the FC-W shear stability requirements, outperforming competitive oils to deliver a superior lubricating film.
Four stroke outboards feature vertically mounted crankshafts, limiting oil retention at shutdown and increasing the likelihood of dry starts and accelerated wear. AMSOIL Formula 4 Stroke Marine Oils contain a high concentration of premium-quality anti-wear additives that provide an extra level of wear control upon start-up (see Four Ball Wear Test graph below).
AMSOIL Formula 4 Stroke
10w30 Synthetic Marine Oil
Wear Comparison
AMSOIL Formula 4 Stroke
10w40 Synthetic Marine Oil
Wear Comparison
In the Four Ball Wear Test, lubricants with low scores offer the best protection.
AMSOIL Marine Oils have the lowest scores of all the motor oils tested.
Exceeds Both the API and NMMA FC-W Requirements for Shear Stability
In addition to be subjected to higher RPMs, prolonged idling and low operating temperatures contribute to fuel dilution, further thinning the oil. To ensure adequate protection for their engines, marine engine manufacturers set minimum high-temperature/high-shear (HTHS) viscosity limits. AMSOIL Formula 4 Stroke Synthetic Marine Oils are shear stable and formulated with sophisticated oil additive chemistry, exceeding the HTHS requirements of both the API and NMMA FC-W (see High-Temp/High-Shear Test graph below).
AMSOIL Formula 4 Stroke
10w30 Synthetic Marine Oil
High Temperature/High Shear
AMSOIL Formula 4 Stroke
10w40 Synthetic Marine Oil
High Temperature/High Shear
In the High Temperature/High Shear Test, lubricants with high scores offer the best protection. AMSOIL Marine Oils exceed the HTHS requirements of both the API and NMMA FC-W.
Applications
AMSOIL Formula 4 Stroke Synthetic Marine Oils are recommended for gasoline fueled 4 stroke outboard, inboard, inboard/outboard (I/O) and PWC (personal watercraft) motors.
AMSOIL Formula 4 Stroke Synthetic 10w30 Marine Oil is recommended for the following applications (see chart below) whenever an SAE 5w30, 10w30 or straight SAE 30 oil is called for.
AMSOIL Formula 4 Stroke Synthetic 10w40 Marine Oil is recommended for the following applications (see chart below) whenever an SAE 10w40, 15w40, 25w40 or straight SAE 40 oil is called for.
| Recommended Applications | ||
|---|---|---|
| Four Stroke Outboard Motors | Inboard and I/O | PWC (Personal Watercraft) |
| Bombardier/BRP Honda Johnson Evinrude Mercury Nissan Suzuki Tohatsu Yamaha |
Chevrolet Chrysler Marine Crusader Ford GM Marine Power MerCruiser OMC Volvo Penta |
Bombardier/BRP (Sea-Doo) Honda Polaris Yamaha |
| Note: AMSOIL Formula 4 Stroke Synthetic 10w30 Marine Oil is recommended for use in place of 5w30 as specified by Honda. Note: AMSOIL Formula 4 Stroke Synthetic 10w40 Marine Oil is recommended for use in place of 25w40 as specified by Mercury. |
||
Service Life
Four stroke outboard motors and PWC (personal watercraft) applications:
Due to potential fuel dilution or water contamination, change oil at the engine or watercraft manufacturer recommended interval.
Inboard and I/O applications:
Change oil at two times the engine manufacturer recommended interval or one year, whichever comes first.
Performance Specifications
AMSOIL Formula 4 Stroke Synthetic Marine Oils meet or exceed the following performance test requirements and may be used in motors requiring oils meeting these specifications:
- API SL
- NMMA FC-W
Attention Power Sports Enthusiasts!
The AMSOIL Online PowerSports Product Lookup Guide contains lube and filter specifications for motorcycles, snowmobiles, ATVs, PWC (personal watercraft) and outboards.
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