I know it goes against normal thinking, but if you use the FelPro seal BS-40644 (the one that has a hybrid compound, not just rubber), the install instructions that come with the seal say specifically to NOT lubricate the seal or the crankshaft and that it must go in dry. I just did mine and was shocked to see that. I followed the instructions even though my inclination was to oil it. I have to assume they know what they are talking about. If you use the rubber version BS-40620 then that one you would lubricate.