Engine is a 5.3, in a 2005 Z71 suburban, original to the truck as far as I know. It now has 219744 miles. Consumption is a small bit more than 1/2 quart per 1000 miles. Lots of freeway usage on this particular oil change (we are 1000 miles in). I change the oil in this truck every 3000 miles, and the last several changes have been synthetic 5W30. it's always gotten 5W30, just not always synthetic.
I found a large amount of information on the AFM engines when I did my search, but not so much on my engine (which is an L59 per VIN). So what is normal? At what point is an amount considered unhealthy?
I also should mention that I found a small amount of fine metal on the drain plug pickup the last oil change, but I have no idea how many miles it took to get there, because checking that wasn't on my radar before. I know this engine is getting old, just not sure how to quantify that lol.
I found a large amount of information on the AFM engines when I did my search, but not so much on my engine (which is an L59 per VIN). So what is normal? At what point is an amount considered unhealthy?
I also should mention that I found a small amount of fine metal on the drain plug pickup the last oil change, but I have no idea how many miles it took to get there, because checking that wasn't on my radar before. I know this engine is getting old, just not sure how to quantify that lol.