What to Know about Mil Spec Oil
Recent studies have shown that around 70% of unplanned equipment shutdowns are caused by the use of incorrect lubricant selection and management. When it comes to metalworking fluids and mil spec oil, there are specific instructions regarding each type of industrial lubricant and where and when it should be used.
When considering mil spec oil compatibility and military oil specifications, here are some things to keep in mind:
Rule number one: always consult the maintenance manual. The maintenance manual for your equipment or vehicle will always have authorized lubricants clearly listed. If the primary mil spec oil is not available for some reason, find the appropriate alternative.
For example, when it comes to aircraft turbine engine oils, MIL-PRF-7808 and MLI-PRF-23699 are the only two acceptable alternatives. MIL-PRF-7808 is a mil spec oil that has a synthetic base and is designed specifically for aircraft turbine engines, helicopter transmissions, and accessory equipment. This is designed for low temperature environments (such as Arctic ops and high altitude ops). The viscosity of this oil allows for temperatures down to -51 degrees Celsius.
The other option for mil spec oil (for Aircraft) is MIL-PRF-23669. This oil offers the same properties as the former, though it only allows cold weather down to -40 degrees Celsius. Because of the intense nature of many military operations, using standard oils is not acceptable. Both extreme temperatures and extreme stress on the engine require a specific, high grade oil to be used.
Understanding Oil Viscosity
One of the largest factors that determines mil spec oil is viscosity. Viscosity is a measure of the resistance to flow of a fluid. Thicker fluid is considered high viscosity, as it will flow slower. Thinner fluids will flow faster, and thus have a lower viscosity.
The viscosity of an oil will vary depending on temperature. The grade of viscosity indicates what the maximum flow of the oil is at low temperatures. If temperatures become extreme, as they do in many military operations, the incorrect type of oil or lubricant can stop flowing and cause catastrophic damage to equipment and vehicles.
Getting high grade military spec oil and lubricant can be a logistical challenge. We specialize in maintaining all mil spec requirements for our lubes and oils. If you are looking for specialty lubricants for extreme conditions, or have specific manufacturing requirements, give us a call. Let us figure out the best way we can help you keep your equipment and vehicles running in prime condition.