Service Bulletin No. 446 E

The Use of Lycoming LW-16702 Oil Additive

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Supersedes Service Bulletin No. 446D

July 18, 2008 

MODELS AFFECTED

Lycoming O­320­H, O­360­E, LO­360­E, TO­360­E and LTO­360­E series engines.

TIME OF COMPLIANCE

At next engine oil change and at every 50 hours and at every oil change  thereafter.

Laboratory tests indicate that occasionally when the engine is first started, for a very brief interval there is insufficient residual oil between the rubbing parts which affects the service life of components. Lycoming  has evaluated an agent which, when added to the normal oil supply, deters scuffing under these conditions.

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