I'm going to say never. The stuff usually allows the string to become contaminated with dirt grit and grim. I'll clean the rail once in a while because of the serving wax build up. I shoot an Excalibur.
If you do not lube the rail you will wear out your serving much sooner. When you wax your string do not wax your serving. When you rewax your string clean it first. You should lube about every 10 - 15 shots.
No, it doesn't address cleaning the string, in addition I edited my post above because when I looked for info on cleaning the string I saw I must need new glasses. It says re- lube after 25 shots, not 5. You might want to pm dpms about cleaning the string, he does some testing oncrossbows.
When you are up to your butt in alligators, it is hard to remember your intent was to drain the swamp. Stay focused!
Last edited by Woods walker; 01-18-2018 at 12:44 PM.
You can lube the rail every 20-30 shots. I like to wipe most of it off so that only a sheen remains. I do not like thick gunky rail lube but prefer thin lube like 30-06 Xfuel 325. Thick rail lube can be pulled back into the trigger latch and begin to gum it up.
Wax your string and cables liberally once a season and use friction between your fingers and the string to melt the wax in. Clean them with a damp cloth.
Replace them every 3 three years if you do a lot of shooting or if you notice the center serving separating to the point where the string latch is contacting the string material.
I support all hunters, regardless of weapon or technique!
I have a 2011 Tenpoint Stealth and put a small drop on each side of the rail. That usually lasts the whole season, unless I get caught in a rain, and then I will clean the rail and relube. When I bought it, the guy at the archery shop had the oil smeared everywhere, the felt on the claw of the Accudraw was so saturated, it fell of in 5 days, I called Tenpoint and they said the guy had no idea what he was doing and told me every 50 shots. A few guys I shoot with, want to lube the rails after just 5 or 10 shots. You get to much oil on and are moving around the woods, the oil will pick up a lot of debris. I wax the string in September and then again before putting away for storage after the season. It still amazes me how long a string will hold up, when you look at the sharp angle of the string when these bows are cocked for hours at a time.