Hi All . I have a 2001 dodge 2500 diesel and I noticed that there is smoke coming out of my breather tube. Never noticed it be for I changed my cluth and fan to a electric fan. Gas mileage way better 2.3 mpg increase.Notice it when the fans are off.

 

Just a quick way to check it is to hold a piece of paper under the tube. It should blow out and then suck back up. If it does then your probably fine. If it continuously blows the paper down you have issue with blowby. This is just a quick test and not the proper way to check it.

 

mines been smokin since u bought it still runs like a top with almost 200k on it, iv wonderd the same thing though just figured it aint hurtin nuthin