Exxon Aviation Oil Elite™ 20W-50

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Exxon Aviation Oil Elite™ 20W-50 is a premium quality, semi-synthetic, ashless-dispersant aviation piston engine oil. It is formulated from select, highly refined mineral base oils, a polyalphaolefin synthetic base oil, and ashless performance additives providing outstanding engine cleanliness, wear protection, and corrosion protection.

Exxon Aviation Oil Elite 20W-50 is designed to satisfy all opposed piston engine manufacturers’ requirements under a wide range of climatic conditions. It provides:

  • Excellent engine cleanliness
  • Outstanding protection against wear, rust and corrosion
  • Better cold-start protection and a stronger lubricant film in typical operating temperatures, compared to mono-grade oil
  • Compatibility with all commercial aviation piston-engine oils
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Product information

   Exxon Aviation Oil Elite™ 20W-50 performance profile 1.458 MB/pdf
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Aviation lubricant shelf life

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Storage and handling recommendations and best practices

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Features and benefits

Extensive laboratory, engine rig and flight evaluation tests have demonstrated the excellent performance of Aviation Oil Elite 20W-50. Key features and potential benefits include the following.
High level of rust and corrosion protection
Extends the life of critical engine parts
Excellent wear protection
Long engine life
High oxidation and thermal stability
Minimizes deposits and extends engine life
Powerful dispersancy
Keeps engine parts, turbocharger bearings, propeller hub and dome, etc. clean of harmful sludge and varnish deposits
High viscosity index Provides easy starting and fast lubrication of critical engine parts under low temperature conditions as well as high lubricant film strength and low wear under high temperature operating conditions
20W-50 Multi-grade Year-round lubricant for most climates
Compatible with all commercial aviation piston engine oils - both non-dispersant and ashless dispersant type Flexibility in use
Contains the Lycoming anti-wear/anti-scuffing additive
Compliance with FAA airworthiness directive AD 80-04-03-R2 par.b.1


Exxon Aviation Oil Elite 20W-50 is U.S. Military approved under SAE J1899, which replaced MIL-L-22851D and is listed in the U.S. Military Qualified Products List QPL-1899. It is approved by and included in the Qualified Products Lists of Teledyne Continental, and Textron Lycoming and it is designed to satisfy the requirements of all opposed piston engine manufacturers. It provides an alternate means of compliance with FAA AD 80-04-03-R2 par.b.1.

New or newly overhauled aircraft engines should be broken in according to the engine builder’s recommended procedure. Many engine manufacturers advise running in on straight mineral oils for the first 25 to 50 hours of operation. In all cases, however, the engine manufacturers recommendations should be followed, since the run in procedure can vary from engine to engine.

Aviation Oil Elite is compatible with non-dispersant mineral oils as well as other ashless-dispersant oils that meet the requirements of MIL-L-22851D/SAE J1899. It can also be used in high-time engines that have previously used a straight mineral oil. In this case it is advisable to carry out the oil-screen inspection recommended by the engine manufacturer.

Specifications and approvals

Aviation Oil Elite 20W-50
Is approved against
MIL-L-22851D/SAE J1899
Teledyne Continental Motors (MHS 24)
Textron Lycoming Spec No 301F

Typical properties

Test methods
Elite 20W-50 (1)

Kinematic viscosity, cSt

ASTM D 445

at 100ºC


20.6 (16.3 min, 21.9 max)

20.6 (16.3 min, 21.9 max)
20.6 (16.3 min, 21.9 max)
at 40°C



Viscosity index

ASTM D 2270
Cold cranking simulator (CCS) viscosity at -15ºC, cP ASTM D 5293
7200 (9500 max)
High temperature high shear (HTHS) viscosity at 150ºC, cP ASTM D 4683
Pour point, ºC (ºF) ASTM D 97
-26 (-15)
COC Flash point, ºC (ºF) ASTM D 92
260 (500)

260 (500)
260 (500)
260 (500)
ASTM D 892


Seq I, mL/mL


Seq II, mL/mL


10/0 (50/0 max)
10/0 (50/0 max)
10/0 (50/0 max)
10/0 (50/0 max)
Seq III, mL/mL



Gravity, API



Density at 15.6ºC, g/mL (lb/gal)
ASTM D 4052
0.877 (7.3)
Acid number, mg KOH/g ASTM D 664 (pH 11 end-point)
0.45 (1.0 max)
Copper corrosion ASTM D 130


3 hours at 100ºC


3 hours at 204ºC


Ash content, mass % SAE J1747

SAE J1747
Sulfur content, mass %


(1) Values not identified as min/max are typical and may vary within modest ranges




  • Teledyne Continental
  • Textron Lycoming
  • Wear protection
  • Corrosion protection
  • Rust protection
  • Severe operating conditions
  • High/Low temperature viscosity
  • Ashless
  • MIL-L-22851D/SAE J1899
  • Teledyne Continental Motors (MHS 24)
  • Textron Lycoming Spec No 301F

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