Mineral oil disc brakes should require bleeding pretty much never. The fluid remains viable longer than the service life of the lever. Or at least as long as it takes to spot the next shiny thing and flog the bike and make it someone else's problem.
Most old bangers I see come with some variation of black gloop instead of oily pink stuff. It works, until it doesn't.
@Netakure started
London Fixed Gear and Single-Speed is a community of fixed gear and single-speed cyclists.
Mineral oil disc brakes should require bleeding pretty much never. The fluid remains viable longer than the service life of the lever. Or at least as long as it takes to spot the next shiny thing and flog the bike and make it someone else's problem.