[Big Dave]

At a hundred grand you may have some plug wires breaking down. Spark plugs pretty much last forever since tetraethyllead went away. Electronic ignitions don't wander like old-school distributors did., but underhood heat still breaks down insulation.

Check your brake pads. Everybody uses sintered metallic brakes these days. When iron rusts, it expands. You may have rust at the edge where the rotor doesn't wear off the soft, weak ryst and brakes may be dragging. Also re-lube the caliper slide pins. They get get dry and cause brakes to drag.