Lycoming Service Bulletin 446C and 471, plus Service Instruction 1409A
MIL-L-22851(obsolete)
SAE J 1899
Continental recommended
FAA Airworthiness Directive 80-04-03
AeroShell Oil W100 Plus and W80 Plus are the only single grade oils blended with this antiwear additive technology. That means that owners of Lycoming model engines, specified in the applicable service bulletin, don't have to add any supplemental additives to the oil.
AeroShell Oil W100 Plus and W80 Plus can be used in any certified engine, this includes: Lycoming; Continental; Pratt & Whitney radial and most radical, opposed or in-line engines.
AeroShell Oill W100 Plus and W80 Plus are not recommended for use in helicopter with a common sump for the engine and transmission. The anti-wear additives makes the oil more slippery than regular single grades. This can cause the transmission to slip. The product is not recommended for the breaking in of a new engine for the same reason.
