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.
Glitter in 6.2L oil ... please help
- Thread starter thefrey
- Start date
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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
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
