rvndonbon Report post Posted May 23, 2012 When I change my engine oil on my Cat 3126 B the level of the oil in the old filter is down about two to three inches, not full, is this normal? Thanks Share this post Link to post Share on other sites
wolfe10 Report post Posted May 23, 2012 Don't really know if this is a problem or not. Mine (Caterpillar 3116) has always been full. You might give the Caterpillar RV Hotline a call with your engine serial number and discuss this: 877 777-3126. Share this post Link to post Share on other sites
