Joined: Jul 2015
Posts: 7,497
Likes: 3,300
From: NW Oregon
Bikes: 1982 Trek 930R Custom, '91 Diamondback Ascent w/ XT, XTR updates, Fuji Team Pro CF road flyer, Specialized Sirrus Gravel Convert, '09 Comencal Meta 5.5 XC, '02 Marin MBX500, '84 Gitane Criterium bike
both the bikes you list are lower end bikes, fancy brand name, or not... neither one would have been built with "lined cables"... cable HOUSINGS, actually... unless someone spent a bunch of money to have either re-cabled with a decent cable/housing type, you need to hit them with a bit of lube, or never get them wet! Considering their sale price, the cables may not even be Stainless steel.... and the brake housings are almost assuredly unlined, spiral steel types... the shift cable housings may be either strand or spiral types...
i've had much better results using PB Blaster... i haven't bought any WD40 in YEARS... it's kerosene in a can, btw... with a very tiny amount of 5 wt. oil added... makes great test fuel for old engines, though.
LINED cable housings should not require lubing, as the PTFE(teflon) liner, and coating on the matching cables, is slick as slick can be. Your MTB buddies are flushing mud out of the cables/housings.
Last edited by maddog34; 05-15-17 at 12:22 AM.