05-10-2011 07:22 PM
If you are conserned then call you cat dealer and have them come out and set up a blow by meter on it. That will give a number of how much it is flowing, then they can compare it to spec. It is caused by oil vapor, ring leakage.
05-18-2011 02:20 PM
You may also monitor engine lube oil consumption if occured, blow by fumes pattern and engine exhaust smoke / emission control. The other satisfactorily way to measure the blow by fumes by Caterpillar approved recommended (Digital Blow By) measuring tool and make a comparison of engine specs.
Thanks for reading.