I pulled mine last night, it was crusty like all the ones on the internet. I cleaned it off and put it back on.
It made a difference in drivability - truck seems to have a bit more pep to it. Milage is showing preliminarily a boost too of about 1-2 mpg.
I'm going to start checking it each oil change.
I pulled mine last night at my latest oil change.
It has at least 90K mile on it since its seen daylight. It looked about like the photo above.
I knocked the loose stuff off, shot it with some cleaner, hit it with compressed air and put it back.
I'll be danged if the truck doesn't seem to be a little lighter on its feet today. With a bit better milage too.
Guess I'll be more regular about cleaning it.
Haha. This old man is in real good shape. If I wasn’t retired I’d still get a new truck every two years. I like the performance. My family business has a fleet of all the brands. Even performance trucks. I like the old stuff better. Too much glitter and intrusion. They don’t last like they used to. It’s a shame because the less fortunate second, third owners will pay that price.
Update to my experience, my truck was due an oil change per the GM OLM, right at max mileage around 7500 miles.
As I've stated, the dipstick doesn't appear show a tremendous drop in oil volume over the course of a change, that needs some correction.
Just prior to pulling the drain plug I noted the level on the dipstick. It was about 2/3-5/8 down on the acceptable range, not 3/4 but more than 1/2 way down.
After refilling with the full 10 quarts, the dipstick measured at the top of the acceptable range - full. After noting these two dipstick readings at each end of the oil change interval spectrum, I might notice the gradual drop on the dipstick more easily during regular checks.
I measured the drained volume of oil and what came out of the drain pan was about 8 1/2 quarts.
To be below the add mark on the dipstick it would have to be about 2 quarts below the full 10 quarts.
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