Geezzzz you'd have thought i asked what engine oil to use.............
used to use the dipstick to oil my chain. Bike on center stand and dab the drips from the dipstick onto the chain slowly turning the wheel...........repeat till chain is done. would keep a cloth in the bikes factory lock case. Wipe down the rear wheel after every ride or when i oiled the chain. wheels always looked clean. Never used an O'ring chain.
I have used a combination of WD40 mixed with lanolin oil on the DL650 that has an O'ring chain on it. Lanolin oil is fairly thin already but it has good sticking qualities adding WD40 to it makes it go a bit further...........I buy both WD40 and lanolin oil in 4 and 5 liter containers. $40.00 for 4 liters of WD40 and $80 for the Lanolin oil. Never wash the bike with water. always wipe down with the mixture of lanolin oil in a spray bottle sprayed onto a cloth.
On the O'ring chain it isn't the sides that needs oiling, as pointed out, it is to get lube into the rollers and reduce wear, where the chain and sprocket rub each other.
Have tried spray-can chain lubes in the past and they look like they are doing stuff when the bubble, crack and pop fizz, but found the cleaning off the wheel to much of a pain and went back to the dipstick process.
Been reading peoples opinions, (yea like arseholes, i know), and a couple have said to have had good results using the Wurth HHS2000 and chain longevity last half as long again as usual.........Had figures in a log book, FWIW.
Using the HHS 2000 i found it to be very thin and only needs a small amount. Just a quick light touch on the can produces a little spray with just enough large droplets to hit the area wanted, (without spraying every where and wasting most of it), to lube the rollers and sprocket. The little i used makes it cost effective................ Do this from the rear on the chain and sprocket. stupid bike doesn't have a center stand, so spray a little move the bike forward 2 ft...........spray a little more, move the bike 2 ft..........note to myself.....buy a center-stand.......spray a little more, move the bike 2 ft............repeat till all the chain is done............
So i figure for for $32, ($16 per can, and cant find chain lube for less than $22 per can), it's nothing to try it out, and it if it does make the chain last 1/2 as long again then its money well spent..........if it doesn't, its back to WD40/lanolin mix.