I must be the odd one out. I used scottoiler Active fluid with their cycle oiler kits for years..even with full suspension MTBs. Give a squeeze on the rubbery 'squid' to put on water based fluid via the jockey wheel. Using every 12 miles or so, I never had a spot of rust on my chains, which kept clean and lasted much longer before stretching. Ditto the cogs. then Scottoiler pulled out of the cycle kits and recomended spraying their motorcycle based FS365 fluid over the whole frame and chain. They told me that the original yellow Active fluid and the blue FS365 were the same formula. So I have used the latter in my oiler kits ever since. One day the 'squids' will puncture and with no more spares are available I will just carry a small bottle around with me to apply from the spout. Since the FS365 can be had in 1lt. bottles, it lasts for ages. As an aside, I use Muc-Off Urban 3 step Protect and shine which really does seem to slow down crud sticking to the bike and put a shine on it. Got it from Lidl but not seen any lately. Something else you get to love and then the manufacturers change things!!