FLEETWASHDUDE 14 Report post Posted November 23, 2008 Two of our cold water belt drive pumps (Cat 550) are having issues. Oil is coming up out of the caps. The caps on Cat pumps come with a small hole in them. Havent had this issue before. They are working good as usual and are kept in a heated garage so no freezing issues just a lot of oil loss. The burner of ours uses a Cat pump as well but no problems with it. I've got a twelve hour day today so be back tonight. Thanks for any help if offered. Share this post Link to post Share on other sites
Cajun Cleanin 64 Report post Posted November 23, 2008 If the oil is milky ooking it has probably blown a seal.The only one I have ever had fail on me it was very obvious though it wasn't bubbling out it was blowing everywhere. Share this post Link to post Share on other sites
Russ Johnson 141 Report post Posted November 23, 2008 As was stated, possible water getting in to crankcase, displacing the oil. Recent oil change and overfilled, or filled with detergent oil... Share this post Link to post Share on other sites
