Avionics Report

August 2000 Issue

The Tiger Does Oil

ExxonMobil’s Elite muscles into a crowded piston-engine oil market with impressive performance claims. But can it deliver?

[IMGCAP(1)] Does the oil you dump into your engine really matter that much? Some owners swear Aeroshell is the best oil going while others won’t touch the stuff, preferring Phillips’ well-regarded XC.

Lacking any valid side-by-side wear data across a range of engine types, no one can really say which is best, although some engine shops are willing to try. Our view is that the way an engine is operated probably has more to do with engine longevity than the type of oil used.

And like most owners, we’ve tended to assume that the aircraft engine oil market is far too small to justify serious research into improved products.

We assumed wrong. Last spring, oil giant ExxonMobil announced...

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