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Lube it up

Maintenance top tips: Get the right stuff for the job


Posted: 23 October 2008
by Mike Davis

Amble into pretty much any bike shop and you’ll be confronted by an almost bewildering array of Useful Stuff In Bottles. Yes, we’re talking lubricants. There are dozens of different types out there, and they don’t all do the same thing. So to help you along, here’s a quick guide to what sort of lube you need for what jobs…

Chain lube

An obvious one, this. Chain lube is for your chain. Which you choose depends a little on your local conditions and preferences. “Wet” lubes are thick and tenacious and good for wet and muddy conditions, but in drier weather tend to attract dust. “Dry” lubes are a little less sticky and tend to stay cleaner when it’s dry. There are also wax-based lubes that are designed to form a slick coating on the whole chain. They’re effective but can be a pain to apply – you need a thoroughly clean and dry chain first.

Chain lubes tend to come either in aerosols (easy to apply but a bit wasteful) or dropper bottles (more tedious to apply but it all goes where you want it). Small bottles are also handy to drop into your pack should you do one river crossing too many in a ride.

Water displacers

There are loads of things like TF2, WD-40 and GT85 – thin oils designed to chase water out of things and apply a small amount of lubrication. In the case of WD-40, the lube effect is minimal – it’s great for getting water out (spray it on a freshly-cleaned chain to stop it going rusty) and freeing things up, but don’t rely on it for anything that actually needs oil in it. TF2 and GT85 have some Teflon in, so they’re a little more versatile – brake pivots, the inside of shifters, cables etc.

Anti-sieze

This stuff isn’t really a lubricant, as it’s designed to go between non-moving surfaces. As you’ve probably noticed, some bits of bike tend to get firmly stuck if left to their own devices. A good slathering of anti-sieze will prevent that by forming a barrier between the threaded object and whatever it’s threading into. SPD bolts, bottom bracket cups and pedal threads are all good anti-sieze candidates.

Bearing grease

Good, thick, sticky waterproof grease is just the thing for hubs and headsets. Plenty to choose from, and if you think bike specific ones are a bit spendy, look for the stuff designed for boat trailer wheel bearings – cheap, plentiful and stays where it’s put. It’s also a good idea to grease the threads and under the heads of bolts, otherwise they tend to gall up before they’re properly tight. The same goes for bottom bracket spindles before the cranks go on. Seatposts and the top of the steerer where the bits of headset slide on are also good grease candidates.

Suspension grease

Many suspension forks are open-bath systems, meaning that there’s oil inside that circulates around the workings keeping everything smooth. But some forks use grease to keep the outer legs sliding smoothly. Conventional grease tends to have nasty effects when used in forks – it can break down elastomer springs and degrade bushings. So use a suspension-specific grease – most manufacturers of greaseable forks make a grease to go with them.

Leave to dry

Then there’s those odd bits that really you don’t want to lubricate at all. Most rear shock bushings disintegrate if exposed to grease and are designed to be self-lubricating so leave them clean and dry. And sealed cable sets like Gore-Tex Ride-Ons and Avid Flak Jackets have low-friction Teflon liners and shouldn’t be lubed either – lube just attracts grit and damages the liners.

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Discuss this story

I've been told on many occasions to not put grease on the spindles of tapered cranks as it assists the crank arm to go on more than it should when you tighten the nut on...is this correct as the generilastion in this article says otherwise.
Posted: 23/10/2008 12:55

I always grease and never had a SqT axle or any other fail,  I've known others that haven't greased and have had them fail,  but thats not entirely scientific.

I'll keep greasing though,  if it's not broken don't fix it after all!!


Posted: 23/10/2008 17:05

It's one of those unanswerable questions.  Do what you're happy doing.

I don't grease.


Posted: 23/10/2008 17:34

I used to think I didn't grease, and then realised that what I was actually doing was wiping the spindle with an oily old rag, ie greasing it FWIW, I believe in greasing them as it makes the torque values for the bolts actually mean something. The grease all gets forced out of the interface by the time they're on.
Posted: 23/10/2008 22:32

I remember a long time ago, some cranks could be tightened too much and split at corners on a square taper. Therefore not greasing them stopped them from sliding too far up the axle. I think it could have been CNCd cranks that were vunerable.
Posted: 24/10/2008 14:43

I don't think that that's ever been the case, unless you're the Hulk. If they break going on, they were cracked already - fatigue cracks tend to develop at the corners of the taper (because they're corners, and act as stress risers) from riding but you may well not notice them until the act of refitting makes the crack open up.
Posted: 24/10/2008 15:34

I was always advised to grease em if using a torque wrench to tighten them  but not if you were relying on brute strength to do 'em up.

The BB's come as new with the axle ends greased don't they?


Posted: 24/10/2008 15:43

I was always advised to grease em if using a torque wrench to tighten them  but not if you were relying on brute strength to do 'em up.

I'm not sure that that makes any sense at all  


Posted: 24/10/2008 15:47

Probably not

It's along the lines of there is a danger of over-tightening them if you use brute force & your own judgement which would be exacerbated by the grease.

With a torque wrench you'd (probably) be okay.

Clear as mud now?


Posted: 24/10/2008 15:52

Talkback: Lube it up

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