Dust caps

pvr

pvr

Dutch
 Ruler of the South East UK
Got myself some nice M dust caps for the wheels, but was wondering if I should put some oil on the valves first to prevent them from seizing up? I have seen from a fellow member that the dealer had to cut those lockable caps off as they seized solidly.
 
Never heard that before. The owner of that car probably never checked tyre pressure? I haven't had the problem since I started driving 15 years ago.
 
'Copper Slip' is probably best, otherwise you will get cathodic corrossion - rection between two dissimilar metals.
 
ive had this in the past its usually a reaction between the metals if the caps are alloy, if they are chrome plated brass and have a rubber seal in them they should be ok just dont overtighten them and a little bit of grease wont go amiss
 
acerboo said:
ive had this in the past its usually a reaction between the metals if the caps are alloy, if they are chrome plated brass and have a rubber seal in them they should be ok just dont overtighten them and a little bit of grease wont go amiss
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They are the ones I always use.
 
i have Z$ log ones and when it went to the dealer, it was there for a week, i thought id kiss goodbye to them but to my surprise they were still on it!
 
To be precise, its called catalytic corrosion. Two dissimilar metals like that act as a battery effectively, one becomes the cathode, the other the anode and the tiny current (which causes the corrosion) runs from the anode to the cathode normally (I think). Metal boats/ships have a sacrificial anode which is a billet of metal that corrodes even faster than the metal the hull is made of to mitigate the problem.

LandRover owners know all about the subject I believe! LOL :driving:
 
Will put some copper slip on them, it is extremely rare that I can't see the car when parked so I assume (trust) they will remain there.
 
lacroupade said:
To be precise, its called catalytic corrosion. Two dissimilar metals like that act as a battery effectively, one becomes the cathode, the other the anode and the tiny current (which causes the corrosion) runs from the anode to the cathode normally (I think). Metal boats/ships have a sacrificial anode which is a billet of metal that corrodes even faster than the metal the hull is made of to mitigate the problem.

LandRover owners know all about the subject I believe! LOL :driving:
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Or even more precise - galvanic corrosion; an electrochemical process in which one metal corrodes preferentially when in electrical contact with a different type of metal and both metals are immersed in an electrolyte (rain water). Or perhaps they are all one and the same thing - A BLOODY NUISANCE! (especially on 108s') :poke:
 
pvr said:
Will put some copper slip on them, it is extremely rare that I can't see the car when parked so I assume (trust) they will remain there.
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Bet you they will be missing bythe end of next Sunday :evil:
 
pvr said:
They only fit on an M srhutch ... :poke:
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Car Valves are the only component that are identical on every car, so they will be mine :evil:

well more likely the little oiks that nick them when you park up somewhere.
 
ksher said:
Never heard that before. The owner of that car probably never checked tyre pressure? I haven't had the problem since I started driving 15 years ago.
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Yeah I heard the owner wasnt very machanically minded :oops:
 
srhutch said:
pvr said:
They only fit on an M srhutch ... :poke:
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Car Valves are the only component that are identical on every car, so they will be mine :evil:

well more likely the little oiks that nick them when you park up somewhere.
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More precisely - they only suit an M ... :P
 
I know, and that includes srhutch :P

To be honest, the car is hardly ever parked in a sensitive area so I hope they will remain on the car. I might even remove them if I have to park somewhere dodgy (or wherever srhutch is going to be).
 
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