Volvo CV boot coating

[MyWifesBoyfriend]

Interestingly, Volvo says to use "spray wax" 30787812 on outer CV joint boots. If you search for that part number, a Polestar TSB comes up and that part number cross references to Wurth Cavity Protection Spray. It seems that the purpose of the spray in this situation is to reduce noise from the boots, but I assumed something like this would attract dirt and cause damage. For what it's worth, I think the outer boots are made of TPE (thermoplastic elastomer) and the OEM is GKN.

Do any other manufacturers recommend spraying something on their CV boots?

 

[wings&wheels]

IIRC that material dries (eventually) to a waxy, but not terribly tacky consistency so I would be inclined to follow directions. Waxoyl makes a very similar product if you have difficulty sourcing the Wurth product in individual cans.

 

[Oillover]

The only CV boot coating I use is silicone spray.
I apply it annually, give or take a few years.
Still have the original, uncracked CV boots on my BMW which date back to the Reagan era.

I'm not saying the spray mentioned above isn't good, I'm just saying there's cheaper/easier to obtain products available.

 

[Kira]

I use is silicone spray.

Do you wipe them down or just hose them down? (serious question)

 

[Oillover]

It comes from an aerosol can, so I just spray it down and let them drip off the excess and air dry.
It's practically invisible once it dries.

 

[dfarr67]

Silicon spray for me.

 

[Kurtatron]

What does the silicone spray do? I’ve concluded that there’s nothing that can be done to extend the life of rubber. Nothing can be sprayed to tires to mitigate dry rotting. Are CV boots not the same?

 

[slacktide_bitog]

I didn't know any kind of spray that actually works would exist for CV boots!

 

[Donald]

I would think a silicone spray is not 100% silicone but includes a carrier that evaporates. Is the carrier good for the CV joint boots?