New owner here of a 2005 Mandalay with a CAT 350. Lots of blue smoke when started cold. None after it warms up. The oil is above the full mark on the dip stick when cold. Could this be the cause of all the smoke? From some paperwork in a folder, it says that 7 gal of oil were used at the last oil change but the engine spec sheet says 5.5 gallons. Can the oil be changed at those maintenance shops at Pilot or TA?
Thank you