Dry lube stays clean and washes off in rain; wet lube survives rain and collects everything on the road.
Verdict
Use dry lube in dry, dusty conditions and wet lube in rain and winter. Dry lube goes on wet, dries to a waxy film and keeps grit from sticking, but washes off in rain. Wet lube is an oil that stays put through water and picks up every bit of grit on the road, which is why it needs cleaning off rather than topping up.
Chain maintenance is not glamorous and it is the cheapest way to make a drivetrain last. A worn chain wears the cassette and chainrings, which turns a $30 replacement into a $200 one, and the main driver of chain wear is abrasive grit held against the rollers by lubricant.
That is the whole logic of the two categories. Dry lube minimises what sticks to the chain at the cost of durability in water. Wet lube maximises durability in water at the cost of collecting grit. Neither is better in general; they are matched to conditions.
~$11.99
Check Backcountry → Check Finish Line Dry chain lube Price~$10.86
Check Backcountry → Check Finish Line Wet chain lube Price| Finish Line Dry chain lube | Finish Line Wet chain lube | |
|---|---|---|
| Best conditions | Dry, dusty, summer | Wet, winter, mud |
| Attracts grit | Little | A lot |
| Survives rain | No | Yes |
| Reapplication | Every 100 to 150 miles | Less often, but needs degreasing |
| Drivetrain cleanliness | Clean | Black and greasy |
| Typical price | About $12 | About $11 |
You ride in dry weather on dry roads. Dry lube carries the lubricant in a solvent that evaporates, leaving a waxy film that grit does not stick to, which keeps the chain and cassette clean and makes maintenance pleasant. The trade is that it does not survive rain and it needs reapplying every hundred miles or so, and more often on dusty gravel.
Check Backcountry → Check Finish Line Dry chain lube on Amazon
You ride through winter, in rain, or on wet roads. Wet lube is an oil that stays on the chain when water is running over it, which is the property that matters when the alternative is a dry chain and a rusty one. Accept that the drivetrain will be filthy, wipe the chain down after wet rides, and degrease properly rather than adding more lube on top of the grit.
Check Backcountry → Check Finish Line Wet chain lube on Amazon
Apply one drop per roller while backpedalling, let it sit for a few minutes to penetrate, then wipe the outside of the chain thoroughly. Lubricant belongs inside the rollers, not on the outside where it only collects grit. A visibly wet, black chain is over-lubricated and dirty rather than well maintained. Check chain wear with a chain checker: replacing a chain at 0.5 percent wear costs a fraction of replacing the cassette and chainrings that a stretched chain destroys.
With dry lube, roughly every 100 to 150 miles or after any dusty ride. With wet lube, less often, but clean and reapply after wet rides. The more useful signal is sound: a chain that has started to sound dry needs attention, and a chain that looks black and wet needs cleaning, not more lube.
Standard WD-40 is a water-displacing solvent, not a chain lubricant, and it strips lubricant out of the rollers. It is fine for cleaning and useless as a lubricant. WD-40 does sell dedicated bike chain lubes, which are a different product entirely.
With dry lube, usually just a wipe with a rag between applications, with a proper degrease every few months. With wet lube, degreasing is more necessary because the accumulated grit needs to come off rather than be sealed in under fresh oil.
Immersion waxing keeps drivetrains extremely clean and shows very low wear rates in independent testing, at the cost of a fiddly process and short reapplication intervals. Drip-on wax lubes are a middle ground. It is a legitimate third option and considerably more effort than either of these.
Comparison based on published manufacturer specifications and the general consensus of owner reports. We have not tested these units side by side. Confirm current prices and specifications before buying. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.