B e aware that faulty or improperly maintained air system hose connections can cause oil leaks. There have been cases in which a compressor outlet hose came loose and the resultÂing sudden air pressure drop allowed oil to leak past the turbocharger seal and enter the compressor. The compressor components can become oily and dirty and give the turbocharger the appearance that it has failed, when in fact the turbocharger is still functional. Photographs provided show examples of typical oil leakage that is considered accept able.
