A few yrs ago (more like 20) I needed to oil the mores cables in my tower on a 42 Bertram. I had an old fire extinguisher canister ( the kind you add air pressure to with the squeeze handle) I unscrewed the top, added a tube to the bottom of the tank then after calling mores cables I mixed half and half wd40 and auto trans fluid, pumped the can to 120 lbs and adapted a hose and a clamp to whatever size cable needing to be oiled. That damn thing has probably been on every boat in town, I couldn't even tell you how many times I had to track it down when I needed it. I just had to oil my steering cable last week on the fan boat. The wd40 thins the tranny oil enough to let it get in the cables, then the wd evaporates. I never thought much of Wd40 except for thinning oil. I have never seen a can without a rusty top. just evaporates to quickly and leaves no residue. On some taller tuna towers I have had to leave the pressure on, move the cable back and forth for up to 30 minutes or more before the oil finally made it's way through. Even brand new mores or teleflex cables are supposed to be oiled but no one does it.