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Aviation Lubricants & Greases


Overlake offers a comprehensive portfolio of aviation lubricants and greases from the biggest names in the industry.  Listed below is the extensive line of piston and turbine engine oils, hydraulic fluids, gear oils as well as greases for general, commercial and military aviation requirements offered.

Multi-grade engine oils formulated for year-round use have grown in popularity, as a result, pilots are not required to change their aviation oil twice a year as with monograde oils. Another advantage to these engine oils is cold starting, they have proven to turn over a cold engine in less time than monograde oils.  Multi-grade aviation lubricants also prove to reduce fuel consumption of the engine. 

Aviation lubricants are typically stocked and sold in 55 gallon drums, 6/1Qt cases, 4/3Kg cases, 17Kg pails, and 4/1Gal cases, whereas aviation greases are sold in 17Kg pails and 10/14oz tubes.  Other package sizes are also available.

Documentation such as Certificate of Analysis (CofA) and Safety Data Sheet (SDS) as well as specified shelf life requirements are provided upon request with purchase. For inquiries and more information regarding available stock please call 425.822.1776 so one of our lubricant experts may assist you.

Aviation Engine Lubricants

  • Break-in straight mineral oils for radial and opposing piston engines (For example AeroShell and CP cross country)
  • Ashless dispersant oils for radial and opposing and light sport piston engines (For example Rotax 2 and 4 cycle)
  • Turbine oils for military, commercial, helicopters and turbo props (BP 2380, BP 2197, etc. and AeroShell 500, 555, 560 and Ascender)

Military Specific Greases

  • AeroShell Grease 5
  • AeroShell Grease 6
  • AeroShell Grease 7
    MIL-PRF-23827C (Type II)
  • AeroShell Grease 14
  • AeroShell Grease 22
    MIL-PRF-81322G NLGI Grade 2
  • AeroShell Grease 33
    MIL-PRF-23827C (Type I)
    Boeing Approved BMS 3-33B
    Airbus Approved AIMS 09-06-002
  • AeroShell Grease 64
    DEF STAN 91-57

Hydraulic Fluids

  • AeroShell Fluid 4 (dyed Red)
  • AeroShell Fluid 31
    *Compatible with AeroShell Fluids 4, 41, 51, 61 and 71*
    Approved for systems designed to operate with the following:
  • AeroShell Fluid 41 (dyed Red)

Aviation +

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