Genesee Valley Chapter Forum / GVC Chapter Forums / Car Related Topics / oil selection / Latest PostsInstantForum.NET v4.1.4Genesee Valley Chapter Forumhttp://www.gvc-bmwcca.org/InstantForum/forums@gvc-bmwcca.orgThu, 21 Aug 2008 19:39:22 GMT20RE: oil selectionhttp://www.gvc-bmwcca.org/InstantForum/Topic79-6-1.aspxI use 5w50 in my Z3. Before i found the 5w50, I was using 15w50, and haven't had much of an issue. <br><br>course my engine doesn't rev that extra 2k..Mon, 05 May 2008 13:35:07 GMTGEOFF.FRANKS@GMAIL.COMoil selectionhttp://www.gvc-bmwcca.org/InstantForum/Topic79-6-1.aspxwhat synthetic oil viscosity would be best in a 1998 m3. using car at watkins glen driving school.Sun, 04 May 2008 18:16:39 GMTTODDFITZ