QC Lubricants
7360 Milnor St. Philadelphia, PA 19136
(215) 333-4187
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With Extension (800) 887-2436
For Technical Assistance:
Dial Extension 203 for Stan Jakubowski
For Sales:
Dial Extension 211 for Lu Ann Quinn or 224 for Lindsay Romero
Email Lu Ann Quinn  ♦   Email Lindsay Romero


We actively supply a comprehensive line of MIL-SPEC  and commercial lubricants.


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Aeroshell 15W-50AEROSHELL OIL W 15W-50

AeroShell Oil W 15W-50 is a unique blend of high quality mineral oil and
over 50% synthetic hydrocarbon base stocks, plus the AeroShell Oil W
ashless dispersant additive system. This semi-synthetic blend offers high
performance in a wide variety of applications and conditions. The synthetic
base stock performance provides for better cold temperature pumping and
protection than single grade oils. In addition, the blend of synthetic and
high quality mineral base stocks provide high temperature performance
superior to that of other fully approved aircraft piston engine oils. The
mineral base stocks help disperse lead by-products of combustion, thereby
keeping engines free of "grey paint" or lead sludge that can be a problem
with some fully synthetic oils.
The anti-wear additive system in AeroShell Oil W 15W-50 provides
outstanding wear protection for critical camshafts, lifters and other high
wear components.
The anti-corrosion additive package in AeroShell Oil W 15W-50 helps
protect low usage engines and engines in high humidity climates against
rust and corrosion of critical engine parts such as camshafts and lifters.
AeroShell Oil W 15W-50 provides superior anti-corrosion protection for all
types of certified aircraft piston engines. When used with proper
maintenance procedures, the product provides maximum protection and
improves the likelihood that aircraft engines will reach TBO. In addition,
this product provides outstanding high temperature oxidation protection for
hot running engines. It is designed to keep engines cleaner with less sludge
and varnish build-up in critical ring belt and other areas.

AEROSHELL OIL W 15W-50 Applications:
AeroShell Oil W 15W-50 is intended for use in certified four-stroke cycle
aircraft piston engines. AeroShell Oil W 15W-50 is superior to single
grade oils in almost every application. It offers easier starting, better
lubrication after start-up, reduced wear, reduced corrosion and rusting, and
improved cleanliness, with oil pressures and temperatures equal to that of
single grade SAE 50 oils at fully warmed up conditions.
The anti-corrosion additive system is designed to prevent rust or corrosion
in all types of aircraft piston engines. In comparative testing of camshaft
rusting under high humidity conditions, AeroShell Oil W 15W-50 was
almost entirely rust free while other camshafts conditioned on other oils
showed sometimes heavy rusting on cam lobes and bearing surfaces.
These results indicate that AeroShell Oil W 15W-50 can provide maximum
anti-corrosion protection for aircraft piston engines, when combined with
proper maintenance practices and proper operating conditions.

Because of the improved flow characteristics of AeroShell Oil W 15W-50,
operators may observe slightly lower oil temperatures in some aircraft. On
larger aircraft, the oil cooler flap will normally compensate for this change.
However, in small aircraft, oil temperature could be reduced slightly.
Operators should always check the oil temperature to ensure that they are
in the range specified by the manufacturer. Most manufacturers recommend
cruising oil temperatures between 82 to 93C (180 to 200F). Oil
temperatures significantly below this range can result in excessive water
and fuel contamination in the crankcase.

Provides unsurpassed rust and corrosion protection for aircraft engines
Promotes engine cleanliness, fights wear, offers excellent anti-foam
Helps reduce oil consumption by up to 50% and provides superior oil
flow at low temperatures
Compatible with other approved aircraft piston engine oils
Functions as an all season oil, no seasonal changes needed
Reduces fuel consumption by up to 5% over straight grades
Provides unequalled high temperature oxidation stability
Refer to General Notes at the front of this section for information on oil
change recommendations and engine break-in.
AeroShell Oil W 15W-50 is not recommended for use in automotive
engines. For automotive engines converted for use in aircraft, the specific
engine manufacturer or the conversion agency should be consulted for
proper oil recommendation.

AEROSHELL OIL W 15W-50 Specifications
AeroShell Oil W 15W-50 was developed in co-operation with Textron
Lycoming and Teledyne Continental Motors and conforms to their
specifications 301F and MHS-24A respectively. This oil is also approved
under Military Specification MIL-L-22851 which is now obsolete and has
been replaced by the SAE J-1899 specification. AeroShell Oil W 15W-50
is also approved for use in all Pratt & Whitney radial aircraft engines. In
addition AeroShell Oil W 15W-50 meets the provisions of Lycoming
Service Bulletin 446C and 471, plus Service Instruction 1409A and meets
the American FAA Airworthiness Directive 80-04-03 which specifies special
anti-wear requirements for certain engine models.


SAE J-1899



15W-50 Oil Type

Mixed synthetic


and mineral

15W-50 SAE Viscosity Grade



15W-50 Colour ASTM


15W-50 Density @ 15C kg/l



15W-50 Kinematic Viscosity mm2/s

@ 100C


@ 40C


15W-50 Viscosity Index

100 min


15W-50 Pourpoint C



15W-50 Flashpoint Cleveland Open Cup C

220 min


15W-50 Total Acidity mgKOH/g

1.0 max


15W-50 Carbon Residue Ramsbottom % m


15W-50 Sulphur % m

0.6 max


15W-50 Copper corrosion

15W-50 3 hrs @ 100C

1 max


15W-50 3 hrs @ 205C

3 max


15W-50 Ash content % m

0.011 max


15W-50 Trace sediment

Must pass


15W-50 Foaming tendency

Must pass


15W-50 Elastomer compatibility

15W-50 AMS 3217/1 72 hrs @ 70C swell %

Must pass


15W-50 AMS 3217/4 72 hrs @ 150C swell %

Must pass


15W-50 Trace metal content

Must pass


15W-50 Compatibility

Must pass


Aeroshell W OilsAeroshell