Mechanics and Fixing Any Questions Answered

Often thin white lithium grease, IGH grease or suspension fork bush grease are my go to pots for road STI.

For MTB, depends on the type, either the same as above for mid to higher end, or use shimano/motorex type fluro green stuff for lower end shifters. Pop of the lower casing and jam it in there with a brush, massively improves most Tourney/Acera type low end shifters feel and operation.