
Available in 5W-40, 10W-30 and 15W-40. This series is the result of a partnership between AMSOIL and Fleece Performance Engineering. The Fleece Freedom Series is designed to protect modern diesel engines and older units from wear, soot, turbo deposits and temperature extremes. For sale in USA only.
Also see the Fleece 15W-50 Racing Oil and Fleece Break-in Oil.
Fleece Freedom Series Synthetic Diesel Oil package sizes include:
1-Quart Bottle (or buy case of 12)
Oil Depot can offer Fleece/AMSOIL Freedom Series Synthetic Diesel Oils at wholesale prices. Request a wholesale price list using the contact form on this page.
Suitable Applications For Fleece Freedom Synthetic Diesel Oils
The 5W-40, 10W-30 and 15W-40 versions of the Fleece Freedom Series cover the latest API CK-4 specification. This makes these products compatible with the very latest turbo-diesel engines and also backward compatible with older engines. Ideal for Fleece-built engines.
AMSOIL Wear Protection
AMSOIL is known for delivering world-class wear control. Freedom Series contains the latest synthetic oil technology to protect cylinder bores, pistons and rings from wear. Expect steady protection when under load and during long periods of high heat.
Exceptional Soot Management
As diesel engines have a tendency toward generating soot, it is vital to use an engine oil capable of combatting this issue. Fleece Freedom Series has a powerful additive package that keeps engine internals clean and also holds soot particles in suspension. The powerful formula resists thickening and oxidation. Therefore, protection is consistent for the entire service interval.
All Climate Performance
Fleece Freedom Series Synthetic Diesel Engine Oils deliver protection in all climates. The full-synthetic formula is designed to withstand extreme heat without losing viscosity or accelerating consumption.
At the other end of the spectrum, Freedom Series Oils flow freely in extreme cold temperatures (see cold-pour-point in the chart below). This means instant start-up wear protection and improved cranking in cold weather.
Resists Oil Usage
The AMSOIL-engineered Freedom Series uses 100% synthetic base oils that resists volatility and boil-off in hot conditions and under heavy-loads. The result is consistent viscosity and resistance to oil consumption.
Service Life Of Fleece Freedom Synthetic 5W-40, 10W-30, 15W-40
Turbo-Diesel Engines: Change Fleece Freedom Series Synthetic Diesel 5W-40, 10W-30 or 15W-40 Engine Oil at the interval prescribed by the vehicle owner’s manual or as indicated by oil life monitoring systems. Service intervals can be extended when employing oil analysis recommendations. Install a new oil filter at every oil change.
Racing/Competition Service Life: When used for competition purposes, the service life of this product is at the discretion of the vehicle owner or engine builder.
Can You Mix Fleece Freedom Series Synthetic Diesel Engine Oils With Other Brands?
These products are compatible with all other brands of conventional, semi-synthetic and synthetic diesel engine oils. While you can safely mix Fleece Freedom Series Diesel Oils with other brands, this will reduce the drain interval and performance capabilities of these products.
The use of any aftermarket diesel engine oil additives is definitely NOT recommended.
Specifications | |||
| Fleece Freedom Series Synthetic Diesel Motor Oil | 10W-30 (FD1030) | 5W-40 (FD540) | 15W-40 (FD1540) |
| Kinematic Viscosity @ 100°C, cSt (ASTM D-445) | 12.2 | 14.4 | 15.5 |
| Kinematic Viscosity @ 40°C, cSt (ASTM D-445) | 78.9 | 88.7 | 114.8 |
| Viscosity Index (ASTM D-2270) | 150 | 150 | 140 |
| Sulfated Ash Content, wt. % | 1.0 | 1.0 | 1.0 |
| Pour Point °C (°F) (ASTM D-97) | -40 (-40) | -41 (-42) | -39 (-38) |
| Noack Volatility, % weight loss (ASTM D-5800) | 5.1% | 12.0% | 4.0% |
| High Temperature/High Shear Viscosity cP (ASTM D-5481) | 3.5 | 3.9 | 4.5 |
| Viscosity CCS @ °C, cP (ASTM D-5293) | 5403 (-25) | 6260 (-30) | 5272 (-20) |
| Total Base Number (ASTM D-2896) | 10.5 | 10.5 | 10.5 |



