Last May I purchaed a 2004 F250 CC Auto with the 6.8L V-10 with 56K on the odometer. Bought it from the second owner a Ford mechanic at a local dealership. I drove it prior to purchase and scrutinized it pretty good.
Just recently I've noticed (at 62K) that I've got lifter noise from the drivers side cylinder head. Looked at the exhaust manifold and cannot see any broken studs, purchased a stethoscope from harbor freight. From checking both heads at the valve cover bolts I can definitely tell a difference in sound between the two.
I can't remember ever hearing any lifter noise prior to purchase and right after as I normally drive with the windows up (normal in California). When I took delivery he said he had a full service done (oil, filter, tranny etc) so my guess is they use MC 5w-20 at his dealership.
Since he didn't have any maintenance records I did a oil change at 58K with MC 5w-20 to clean any gunk out if there was any. Then at 60K I changed the oil with VWB 5w-20 that I had purchased. I notice this ticking only at idle and when you go through a drive through. You can barely hear it if you are in an open area. I'm using the recommended MC oil filter.
So would changing from MC 5w-20 semi-syn to dino VWB 5w-20 cause this lifter noise at idle?
Just recently I've noticed (at 62K) that I've got lifter noise from the drivers side cylinder head. Looked at the exhaust manifold and cannot see any broken studs, purchased a stethoscope from harbor freight. From checking both heads at the valve cover bolts I can definitely tell a difference in sound between the two.
I can't remember ever hearing any lifter noise prior to purchase and right after as I normally drive with the windows up (normal in California). When I took delivery he said he had a full service done (oil, filter, tranny etc) so my guess is they use MC 5w-20 at his dealership.
Since he didn't have any maintenance records I did a oil change at 58K with MC 5w-20 to clean any gunk out if there was any. Then at 60K I changed the oil with VWB 5w-20 that I had purchased. I notice this ticking only at idle and when you go through a drive through. You can barely hear it if you are in an open area. I'm using the recommended MC oil filter.
So would changing from MC 5w-20 semi-syn to dino VWB 5w-20 cause this lifter noise at idle?
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