rpsinc Posted February 2, 2016 Report Share Posted February 2, 2016 I have a 2001 4700 DT530 that I bought a year or so ago. I havent used it much and while preparing for a trip today, I decided to drain the air tank to see how much water it had. WELL, quite a bit of water drained but what was pretty unsettling was also quite a bit of oil too. Any body else have this happen and where did the oil in the tank come from? Just trying to get an idea where to start looking. Any way engine oil can make its way to the air system? Thanks in advance for the help Marcel Link to comment Share on other sites More sharing options...
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