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How to choose an engine oil brand

Oil changes due to excessive lubricant deterioration are not normally necessary for approved jet engine oils in airline operation. This is due to the stability of today’s oils and to regular oil additions.

The oil system will typically contain more than 95 percent of the new oil in a few hundred hours of engine operation – and ExxonMobil aviation can calculate the actual time from the engine oil system capacity and top-up data.

Occasionally there is a need to change an engine to a different oil. There are four important factors to consider before making a change.

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