AEROSHELL OILS W80, W100 and W120
AeroShell W Oils were the first non-ash dispersant oils to be used in aircraft piston engines.
They combine non-metallic additives with selected high viscosity index base stocks to give exceptional stability, dispersancy and anti-foaming performance. These additives leave no metallic ash residues that can lead to deposit formation in combustion chambers and on spark plugs, which can cause pre-ignition and possible engine failure.
APPLICATIONS
AeroShell W Oils are available in four different viscosity grades:
AeroShell Oil W80 – AeroShell Oil W100 – AeroShell Oil W120
The suffix for each grade corresponds to the viscosity of the oil at 210°F in Saybolt Universal Seconds.
AeroShell W Oils are intended for use in four-stroke (four-cycle) certified reciprocating piston engines, including fuel-injected and turbocharged engines. AeroShell W Oils are 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.
Most radial engine operators use AeroShell Oil W120 in warm weather operations with AeroShell Oil W100 or AeroShell Oil W 15W-50 being used in cooler ambient temperatures.
AeroShell Oil W100 or AeroShell Oil W 15W-50 are the common choices for most operators of Lycoming and Continental flat engines but, during colder parts of the year, use of AeroShell Oil W80 in place of AeroShell Oil W100 would be an excellent choice.
Although some aircraft engine manufacturers and rebuilders/overhaul agencies suggest in their service bulletins the use of straight mineral oil in new or newly overhauled engines, other rebuilders or manufacturers, especially for such engines as the Lycoming O-320H and O/LO360E, allow either ashless dispersant or straight mineral oil for break-in, whereas ashless dispersant oils are mandated for break-in for all turbocharged Lycoming engines. Operators should check with engine manufacturers or rebuilders for the correct recommendation for the specific engine and application.
( ) indicates the product is equivalent to specification.
AeroShell Oil W80 W100 W120
U.S. Approved Approved Approved
J-1899 J-1899 J-1899
SAE Grade 40 SAE Grade 50 SAE Grade 60
British Approved Approved Approved
J-1899 J-1899 J-1899
SAE Grade 40 SAE Grade 50 SAE Grade 60
French (AIR 3570 (AIR 3570 (AIR 3570
Grade SAE Grade SAE Grade SAE
40) 50) 60)
Russian MS-14 MS-20 -
NATO Code O-123 O-125 O-128
Obsolete Obsolete Obsolete
Joint Service OMD-160 OMD-250 OMD-370
Designation
AEROSHELL W OILS
■ Promote engine cleanliness
■ Help keep engines sludge free
■ Help reduce oil consumption
■ Help engines reach TBO (Time Between Overhaul)
■ Protect highly stressed engine parts against scuffing and wear
Approvals/References/Specification
U.S Specification: J-1899 SAE Grade 50
British Specification: J-1899 SAE Grade 50
French Specification: AIR 3570 SAE Grade 50
Joint Service Designation Specification: OMD-250
NATO Specification: O-125
Russian Specification: MS-20
Teledyne Continental Specification: MHS 24B
Textron Lycoming Specification: 301F
