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Message: [QUOTE="dale williams, post: 430796, member: 17261"] I don't think there is a requirement for the cylinder wall to retain oil on a 2 stroke because there is oil everywhere. The oil vapor is constantly condensing on the cylinder walls provided you don't run the coolant temperature above something like 400 degrees F. 4 strokes tend to wipe the oil clean on the down stroke and if the mixture is rich it condenses on the walls and dilutes the oil film that was left behind. More oil in the X hatching would require more gas to reach the same dilution point. Modern car gas has a little oil in it. I'm not sure it is for the injectors or to increase cylinder life but I think it is a big contributor to the increased miles we are getting on cars between overhauls today. [/QUOTE]