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  1. S

    Boxer engine 3xUOA: fuel dilution

    Just the fantastic feedback I was hoping for all. I'll definitely look for the referenced thread and give it a good read and get the dealer my UOAs. No mods/tunes on this, the wife won't allow it and its hers Glad to hear I was on the right track wrt running her on longer trips routinely. And a...
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    Boxer engine 3xUOA: fuel dilution

    Have been tracking my Subaru WReX Premium oil situation because there are so many that burn oil. Clearly my pattern here is dilution so I'm hoping for some guidance on what to do next. Regularly driven in 7mi chunks, which I suspect is the majority of the problem because during the second test I...
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    UOA Motul 300V, 5w40, 2013 BMW S1000RR

    Thanks for the thoughts. 5w40 is the recommended weight for the S1000RR, but yes 10w can be used as noted. I was just following recommendations from the German manu. Thx for the weight feedback, I'll see how far the dealer will cover me; ideal seems to be the 15 at least. As for sample, yes...
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    UOA Motul 300V, 5w40, 2013 BMW S1000RR

    Strange, couldn't find a way to edit my last post. Intended to note that the bike has an offroad y-pipe so I'm not concerned about cat fouling.
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    UOA Motul 300V, 5w40, 2013 BMW S1000RR

    Sorry for the hiatus, have an update. Leakdown showed problems in 3 of 4 cylinders, compression was bad in those same 3, and I have no significant coolant issues. Conclusion: Rings are shot in those 3. Dealer is in process of rebuild. As for the 5w40 300V, it is a pretty common oil for racers...
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    UOA Motul 300V, 5w40, 2013 BMW S1000RR

    Thanks for the thoughts on the Si and Al. Originally Posted by sunruh track time adds a lot of wear if you are actually pushing it and higher rpms. that is very significant fuel dilution! yet somehow its not that far off the 12.5cst needed for 40wt some hiway miles after the track could have...
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    UOA Motul 300V, 5w40, 2013 BMW S1000RR

    My first UOA of any kind, very interesting results I'm following up on (gasoline contaminant). The objective of these is to get an OCI I can depend on given the fact that I ride both street and track (no racing). Some wisdom is suggesting 300mi OCI but that just seems far too short, but then I...
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