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Advice here seems to be split between M1 at 0W-40, maybe a different blend, or Castol Edge 0W-40. The point is, I think, to up the viscosity and let dilution run its course. Am I right? Should I be concerned about stepping away from the OEM spec during the powertrain warranty? These engines...

Originally Posted By: ARCOgraphite How is fuel mileage? Wonder if you have high misfire count. I guess low tension rings and turbo = high fuel dilution. You getting engine hot enoughfor 20-40 mins at least a couple times a week? Run a ACEA A3,B4 Mb229.5 Porsche C30 approval. M1 5w30 is not a...

Originally Posted By: Miller88 To timtrace - if you're towing with this engine, you NEED to run 91 or 93 octane. It won't have to overfuel as much to prevent detonation. You will see marginally better fuel economy and less fuel dilution. My tow tunes are 93. I also run a 93 perf tune on summer...

Originally Posted By: CharlieBauer Huge amount of shearing. Why didn't you get TBN? Is he shearing the reduced viscosity (SUS, cSt)? Should I blow $ on a TBN at the next drain, or hold off another cycle as I'm likely changing oils based on the advice herein?

Greetings. Here are the results of my first-ever UOA. The drain and capture was uneventful thanks to the Fumoto valve and a 1' hose. Am I being told that it should be OK to go to 6K between drains? I have a functional catch can, how is fuel getting into the oil? I thought the CC would remove...