My father sadly passed on a few years ago, but I remember him telling me that in, I believe, the late 40s he was flying four engine bombers out of Changi. A new formulation of (american sourced) oil was put in all of the engines which had the effect of dislodging a lot of sludge and blocking all four oil filters. He therefore had to land with no fully functioning engines. Its a shame he's not around to give me more details but it says a lot about what happened in the days before the gremlins were engineered out.
Last edited by Peter47; 7th Oct 2016 at 15:09.