Mercury Repair Questions? Ask a Mechanic for Answers ASAP
Hello my name is Scott
About the only thing that can be done short of replacing the retractors, is to clean the belt and clean at the upper anchor where the belt slides on, sometimes dirt and grime will get on this upper anchor and cause slow belt retraction, this about the only thing that can be done with these as they are serviced as a unit. I would use a interior stain cleaner, then try some armor all at the upper ancher, the armor all is really slick and should improve the retraction speed.
Additive will very rarely stop a oil leak, they may slow them down because the additive is really thick. Reparing the oil leak is the best action that could be taken.
Any more questions just ask, thanks Scott