Oil blow by out the oil fill tube usi...

Oil blow by out the oil fill tube using the exhaust brake

Posted in the Cummins Forum

Bobby Roy

Weehawken, NJ

#1 Jan 24, 2012
I have a 01 Cummins 8.3 in my RV. It has 56000 miles on it and I run Amsoil 15 40 and change it every 7500 miles. I am blowing out oil through the dip stick tube on long down grades while using the exhaust brake. From Albuquerque to the north east side of Scottsdale AZ which is less than 400 miles and only the last 1/2 with any down grades I lost 2 gal of oil. The blow by tube appears to be clear.

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