I've got a 2003 Dodge Ram 1500 with the 4.7. I've had a problem with a white film in the oil fill canister on the front of the motor. Its sorta like lithium grease looking. I've noticed condensation in it also. I've tried regular and synthetic oils and no change. My boss at work owns a 2005 Durango with the 4.7 and has the same problem. Is this common with the 4.7? I've read on one site that that condensation was due to the use of thin cylinder walls on the 4.7 and was a common prob. Is this true??