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Aeroshell

Aeroshell 15W-50

AEROSHELL 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.

AEROSHELL OIL W 15W-50
Provides unsurpassed rust and corrosion protection for aircraft engines
Promotes engine cleanliness, fights wear, offers excellent anti-foam
properties
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.

Properties

SAE J-1899

Typical

Multigrade

15W-50 Oil Type

Mixed synthetic

hydrocarbon

and mineral

15W-50 SAE Viscosity Grade

Multigrade

Multigrade

15W-50 Colour ASTM

4.0

15W-50 Density @ 15C kg/l

Report

0.86

15W-50 Kinematic Viscosity mm2/s

@ 100C

19.6

@ 40C

122

15W-50 Viscosity Index

100 min

160

15W-50 Pourpoint C

Report

36

15W-50 Flashpoint Cleveland Open Cup C

220 min

238

15W-50 Total Acidity mgKOH/g

1.0 max

0.01

15W-50 Carbon Residue Ramsbottom % m

0.14

15W-50 Sulphur % m

0.6 max

0.1

15W-50 Copper corrosion

15W-50 3 hrs @ 100C

1 max

1

15W-50 3 hrs @ 205C

3 max

2

15W-50 Ash content % m

0.011 max

0.006

15W-50 Trace sediment

Must pass

Passes

15W-50 Foaming tendency

Must pass

Passes

15W-50 Elastomer compatibility

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

Must pass

Passes

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

Must pass

Passes

15W-50 Trace metal content

Must pass

Passes

15W-50 Compatibility

Must pass

Passes

Aeroshell W OilsAeroshell