Thanks Blacksheep. I must admit that I have not come across too many unschedualed starter motor replacements in the 8 or so years that I have been playing, er..... I should say, working on 757's, but the starter oil does get changed on OOP, 'A' check and 'C' check intervals. Perhaps the problems that our friend has experienced may be due to the oil that is used in his companies aircraft. We had problems with, I think, ASTO 555, but after we put 560 in those problems, mainly found on IDG's, went away. But back in the days of good old 2380 there were no problems what so ever. The only reason for the change was financial as 2380 is about double the price of 555 and 560 is about 3/4 the price of 2380. It is a bit like putting cheap oil in your car really; it might be alright for a year or so, but if you want good service from your engine then you put good oil in it and have it changed regularly.