Whats Going On With The Fact That Engine Oil Is Quicker To Be Blackened With The Edge Box? Without The Box Generally The Oil Would Stay Naturally Clean,for Fifteen Hundred Miles Or Sothen Gradually Start To Darken. Now With My Box On 5&5 Most Of The Time I Can Generally See Discoloration In 500 Hundred Or Less And It Is Black? Any Comments Whether This Should Be Of A Concern Or An Oil Anylysis Needed? What Should I Do ?