Spray or drip some of your usual chain lube in some isopropyl alcohol.
See what happens.
Try mixing the two.
If they are readily miscible (mixable) then that suggests that the isopropyl alcohol is sufficient to clean your chain.
If not - i.e. they stay separate (think oil and water) then that suggests you need something less polar. Like OMS.
Last edited by Deontologist; 05-21-15 at 07:36 PM.