Rustproofing and rubber vacuum lines in my F-250

[Donald]

While I was getting the CP4 pump replaced the mechanic noticed he could not get the 4WD to work.

He found the rubber vacuum line used to engage the front 4WD had softened from rustproofing being sprayed on it. Not a big deal, a $10 fix

The pickup has been sprayed with both CarWell and NH Coatings products. Not a reason to not get rustproofing sprayed, just something to keep your eye on

 

[supton]

Good to know. I’ve been leery of NH Oil, just looks like it might be more petroleum based.

 

[Rand]

krown seems to do this with foam rubber such as door weatherstripping if you dont wipe it off.

 

[mattd]

Yes, that does happen. Nature of that coating.

 

[Donald]

Good to know. I’ve been leery of NH Oil, just looks like it might be more petroleum based.

I am thinking most of the creeping rust proofing will do this.

 

[supton]

I am thinking most of the creeping rust proofing will do this.

Not sure if Fluid Film is as bad. Not sure about RP342, maybe that will, before the solvents evaporate off? but that doesn’t creep, so your point still stands.

 

[mattd]

Good to know. I’ve been leery of NH Oil, just looks like it might be more petroleum based.

It’s a mineral based food grade oil.

 

[KrisZ]

A small price to pay for a rust free vehicle IMO.

 

[Rand]

I am thinking most of the creeping rust proofing will do this.

FF /non petrol based usually don't do that.

 

[mattd]

A small price to pay for a rust free vehicle IMO.

It is, that being said I switched to noxudol a couple years go

 

[dfarr67]

krown seems to do this with foam rubber such as door weatherstripping if you dont wipe it off.

Not just Krown in my experience- you need to watch out for the rubber.

 

[Donald]

It is, that being said I switched to noxudol a couple years go

Can that go on top of the other rust prevention spray?

 

[Rand]

Can that go on top of the other rust prevention spray?

as long as they are similar(petrol based etc?) I think it would be ok.
Not sure I would krown or noxudol on top of other types such as FF or cavity wax...

 

[mattd]

Can that go on top of the other rust prevention spray?

No. Must be pressure washed and dried. Was very time consuming washing off the remnants of the old product

 

[Rand]

No. Must be pressure washed and dried. Was very time consuming washing off the remnants of the old product

which noxudol over which previous product?

 

[mattd]

I washed all the NH oil off before applying noxudol 300 and 700. The noxudol dries to more of an active wax coating . It would not stick to already oiled surface.

 

[Donald]

No. Must be pressure washed and dried. Was very time consuming washing off the remnants of the old product

On the Noxudol it says if your new car was rust proofed by the dealer you should wait a year before applying Noxudol.

 

[Donald]

I washed all the NH oil off before applying noxudol 300 and 700. The noxudol dries to more of an active wax coating . It would not stick to already oiled surface.

Does the Noxudol creep like many rust proof sprays. I know CarWell and NH Coatings creep.

 

[mattd]

On the Noxudol it says if your new car was rust proofed by the dealer you should wait a year before applying Noxudol.

That’s to give it time for the old coating to come off on its own. I washed it off with degreaser and blow dried everything

 

[mattd]

Does the Noxudol creep like many rust proof sprays. I know CarWell and NH Coatings creep.

The 700 creeps longer than the 300. They both eventually dry to a very soft wax. The 700 is softer and meant for low splash areas. The 300 is high spray areas. It’s all still there with more or less zero touch ups after 2+ years