My guess would be that the proprietary "oil" is sticky so that it will cling to the filter medium longer, as well as trap dirt more effectively.
Seems a lighter weight, lubricating oil would blow thru the filter and dry it out, negating the filter's effectiveness. -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en.
