Despite being a bit of a cynic about this stuff, I somewhat reluctantly have to agree with mad_jock. Listen to Genghis on the radio or tv (BBC website too) or have a look at the Finnish Air Force F18 engines on Flight's website. Coupled with that I woke up this morning to both my cars covered in very fine (but gritty) dust. I leave it to the aeroplane owners at my club(s) to make the decision, but I'm now 70-30 not to fly. At Pik the cars don't seem to have the dust that we have 30mi NNE in Glasgow but that might just mean it hasn't quite made it to ground level. With Gipsy overhauls at about £25k I'd rather discretion be the better part of valour