I'm finally getting around to the updated valve cover replacement on my 2005 Silverado with 9400 hours and 214k miles...here are the pictures. Much worse than I expected. The first 120k miles my boss (and probably whoever owned it before him) used up all 100% of the oil life monitor before changing the oil with cheap conventional at the quick lube. I used to take his trucks for oil changes when I was the lowest man on the totem pole, the oil change reminder was always on.
From 130k to 190k I was the driver and we took it every 3-4k for regular cheap conventional oil changes. Call it wasteful if you like to jump to conclusions without all the information, but the olm gets to 0% in 4.5k miles due to all the idle time. I work for a land surveyor so we spend a lot of time in the truck warning up when it's -20 outside, or cooling off when it's 80-90 outside.
From 190k to 214k (2 years ago when I bought it) it's used m1 0w40 and m1 EP high mileage still every 3-4.5k miles. I figured it wouldn't be pristine inside so I was trying to clean it out. Clearly synthetic does a better job of keeping something clean than getting it clean after its already been neglected.
I'm going to keep doing what I'm doing and hope it slowly cleans up over the years, but open to suggestions. I posted pictures of my 76 Oldsmobile 350 V8 a few years ago and it had zero sludge anywhere in the engine when I got it from the junkyard, and same after 10 years 100k miles when I did the intake gaskets. I was hoping this one would look like that inside.
From 130k to 190k I was the driver and we took it every 3-4k for regular cheap conventional oil changes. Call it wasteful if you like to jump to conclusions without all the information, but the olm gets to 0% in 4.5k miles due to all the idle time. I work for a land surveyor so we spend a lot of time in the truck warning up when it's -20 outside, or cooling off when it's 80-90 outside.
From 190k to 214k (2 years ago when I bought it) it's used m1 0w40 and m1 EP high mileage still every 3-4.5k miles. I figured it wouldn't be pristine inside so I was trying to clean it out. Clearly synthetic does a better job of keeping something clean than getting it clean after its already been neglected.
I'm going to keep doing what I'm doing and hope it slowly cleans up over the years, but open to suggestions. I posted pictures of my 76 Oldsmobile 350 V8 a few years ago and it had zero sludge anywhere in the engine when I got it from the junkyard, and same after 10 years 100k miles when I did the intake gaskets. I was hoping this one would look like that inside.
