Originally Posted By: ExMachina
Originally Posted By: Spartanfool
Each time with NextGen 5w30. The first was with a Pure One filter, the last two with the basic Fram. No issues with the first two changes....I cut apart the filter each time. This last (3rd change) BOOM...UGLY!
I am trying to figure out what happened since. Perhaps, as some have suggested, a coolant gasket went...leaking into the oil or something. Coolant level has not moved... I check it weekly...but something caused this.
A theory: NextGen was once caught with some inconsistent quality problems.
See
http://www.syntheticwarehouse.com/Press Releases/Lubes_N_Greases/Valvoline nextgen fails.pdf
Its NOACK was way too high. Does Valvoline NextGen have a problem with quality consistency control at its factory?
Two possible issues with the theory:
1. That quality issue was only with the 5w20 version of NextGen. I have not seen any reports on the 5w30 I used.
2. I bought all three jugs at the same store, at the same time. While I can not be certain, I would think that they came from the same shipment, and perhaps even the same case of oil. If there was a problem with the oil, I would have expected to see it in one of the earlier oil changes.
I still think it something other than the oil or the filter. Several good suggestions have been made...coolant leak, PCV valve, Severe Service, etc. I will keep running them down while I let the M1 TDT and the Purolator Synthetic filter hopefully work their magic.