Glitter in 6.2L oil ... please help

[rdezs]

I recently did a test with the Valvoline on the neighbors 6.2, couple thousand miles before we did the AFM delete just to see how it did. It definitely cleans the internals, and it seemed to do it slow by dissolving. Didn't find any large pieces in the expected places, like in the oil pump relief valve. It was just simply clean. I'd be nervous using the standard engine flush that you run for 15 minutes. .. that stuff might send good size particles into the lifters.

 

[rdezs]

Here's what the lifters look like at just under 200,000 miles, with two oil changes with the Valvoline R&P.

Oil pressure relief valve from the OEM oil pump

And here is what your VLOM plate looks like underneath. Notice there's no o-rings on these later models, it's more like a molded gasket. Probably why GM says you need to replace it when you remove it. I can only surmise that the clean areas are areas the Valvoline was working where oil was spraying out, lowering his oil pressure. His o-ring was pretty much like yours also

 

[Geotrash]

View attachment 455620

That pan has evidence of several extended oil change intervals all along the sides. The pan in my 2012 was relatively clean with just a brownish staining at 120K, and no carbon buildup like that.

This is what a damaged cam lobe looks like. Note the deep scar along the edge. This was caused by a bad lifter tray that allowed the lifters to twist slightly:

Here's another lobe:

And here's one of the lifters:

 

[thefrey]

That pan has evidence of several extended oil change intervals all along the sides. The pan in my 2012 was relatively clean with just a brownish staining at 120K, and no carbon buildup like that.

This is what a damaged cam lobe looks like. Note the deep scar along the edge. This was caused by a bad lifter tray that allowed the lifters to twist slightly:

View attachment 455650
Here's another lobe:
View attachment 455652
And here's one of the lifters:
View attachment 455651

I was only able to take pics and I couldn’t touch anything so I can’t get a super good feel for it. But this is what most of the lobes looked like. There are some surface scratches but I feel like for a cam with 200k on it that it looks decent

 

[thefrey]

Here's what the lifters look like at just under 200,000 miles, with two oil changes with the Valvoline R&P.

View attachment 455628

View attachment 455629


Oil pressure relief valve from the OEM oil pump

View attachment 455630

And here is what your VLOM plate looks like underneath. Notice there's no o-rings on these later models, it's more like a molded gasket. Probably why GM says you need to replace it when you remove it. I can only surmise that the clean areas are areas the Valvoline was working where oil was spraying out, lowering his oil pressure. His o-ring was pretty much like yours also

View attachment 455631

That’s some pretty nice testing you got there’s. It sounds like everyone swears by r&p lol. I’m not sure if my VLOM was replaced but it might be something I’ll consider in the future

 

[Geotrash]

View attachment 455655

I was only able to take pics and I couldn’t touch anything so I can’t get a super good feel for it. But this is what most of the lobes looked like. There are some surface scratches but I feel like for a cam with 200k on it that it looks decent

Those look fine for 200K. Normal wear patterns on those two lobes at least.