So this isn't actually your truck? Does the company you work for know you've put a solvent in the oil?
Yep, its my work truck
And the shop gave me the seafoam, so in a round about way, yes they know.
Here's the thing. It's been doing this for 20k miles off and on. Everytime it sets a code, they just clear it rather than getting looked at. So by all appearances, they don't care.
Very easy to replace. Maybe 5 min to do both sides. It's a single connector and single hex bolt.
Just replace both. Easier than trying to get an oil or additive to do anything with it. They have very tiny mesh screens in them. Once clogged it's done.
Order from Amazon.com.
Perhaps after you pull the valve cover...
They changed the design in 2007
It is not the easy fix you describe. I know, I have the 2006 and older you are referring to, the 2010 is decidedly different. And speaking from experience it is more than a 5min job to simply get the metal grommet out of the valve cover without mangling it beyond use. That alone probably took me 30 min each
Even if it was the older design, they still wouldn't fix it, not unless it was their idea, anyway. Or were told flat our by fleet and travel or a supervisor fix it.
Mechanic in a bottle is the only hope.