Hopefully someone on here can chime in that owns and lubes that ratchet but it's a fairly fine tooth ratchet so I'd tend towards a lighter lube than a thicker one. I think once you get into the higher tooth counts going with too thick of a lube will cause it to skip. I don't think SL is that thick or at least as thick as RLL so it'd probably be ok. I think the general idea is higher tooth counts, thinner lube. Lower tooth counts, thicker lube. I also know that Wright ratchets are marked oil only on them and people usually use something like 3-in-1 or sewing machine oil on those.
You can always just try it, see if you like the action. If you don't clean it out and lube it with something else. I don't think you're at risk of doing permanent damage to it, but if you go too thick the pawls won't be able to engage with the teeth of the ratchet well enough and you'll get the skips.
