Throttle cable oiling, sticky throttle cable

[rustforsale]

I have a 1950 wl. With internal handle bar cables. The stock style set up. Lately I've noticed that my throttle cable is not as responsive as usuall. What's the best way, the best product, to oil this throttle cable line? Any tricks to this or do I just unscrew the handle spiral and squirt the line from there? Thanks

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[duffeycycles]

Trans fluid is the only thing that I have found to work below 20 degrees!To get to the cable you will need to go deeper,unhook at carb and pull the cable out a bit