my escort turbo has just been replaced and this is the 4th turbo on it that its blown the oil seal on the turbo,icant really think what else it could be other then the oil pump could be over pressureing every thing have also cheaked and cleaned the breather pipes etc its had a rebuild on the bottem end there is nothing really specil with this engine as it bog standerd,any idea pls as it really onyoed me loads,thanks