Rust proofing choices

[buck91]

The 2018 is due for another round of rust proofing since its been quite a few years from the last time it was sprayed with RP-342. Going to do he best I can to power wash it (drive way, ramps) but surely won't have it super clean... Tryign to decide between RP-342 aerosol vs bulk vs switching to woolwax. I've used fluid film extensively on my 2011 and its worked really well, but I do have the greasy mess... the 2018 is just much nicer to work on with the cleaner RP-342.

I'd also like to fog inside the frame rails which will be MUCH easier with WW/FF using my current spray guns. Probably could use them with the RP342 bulk fluid if I cleaned them up, though.

 

[mrvmax]

I’m testing out the Blaster Suface Shield to see how it lasts. I am not in an area of high corrosion so it may be all I need but I put it on my 4Runner and on my Polaris SXS. I will have to look into the Rep-342, I have never heard of it.

 

[Zenon]

I would choose anything waxy/oily over the cosmoline.

 

[BobsArmory]

I have been using Surface Shield going on 2 years now and and it seems stay on. The 1 gallon bucket is going to last a while! I'll touch up with a spray can in a couple areas in the fall.

 

[fantastic]

Can we wash the vehicle after applying these products or is that not wise?

 

[BobsArmory]

Can we wash the vehicle after applying these products or is that not wise?

I wouldn't power wash the applied areas but a regular car wash should be fine.

 

[97prizm]

The 2018 is due for another round of rust proofing since its been quite a few years from the last time it was sprayed with RP-342. Going to do he best I can to power wash it (drive way, ramps) but surely won't have it super clean... Tryign to decide between RP-342 aerosol vs bulk vs switching to woolwax. I've used fluid film extensively on my 2011 and its worked really well, but I do have the greasy mess... the 2018 is just much nicer to work on with the cleaner RP-342.

I'd also like to fog inside the frame rails which will be MUCH easier with WW/FF using my current spray guns. Probably could use them with the RP342 bulk fluid if I cleaned them up, though.

What about 3M rubberized undercoat? Supposed to protect and add sound deadening.

 

[Zenon]

Rubberized undercoat may work well in California.
In the Rust Belt, it's a recipe for disaster.

 

[Lubener]

Amsoil H.D. Metal Protector.

https://www.amsoil.com/p/amsoil-hea...SC-EA&gad_source=1&gad_campaignid=18445980464

 

[BobsArmory]

What about 3M rubberized undercoat? Supposed to protect and add sound deadening.

Rubberized products seem best at trapping water and salt next to the metal causing the car to rust even faster than without.

 

[97prizm]

Rubberized products seem best at trapping water and salt next to the metal causing the car to rust even faster than without.

Interesting. I figured if the undercarriage was prepared and then sealed with something like 3M it wouldn't trap anything.

 

[IndyIan]

Interesting. I figured if the undercarriage was prepared and then sealed with something like 3M it wouldn't trap anything.

It gets a rock chip that penetrates the rubber and the paint underneath, then rust starts creating a small gap between the paint and rubber, and then as the void spreads, the rubber just holds salty moisture against the body and the rust spreads faster, and unseen....

My last Focus looked pretty good underneath, I sprayed oiled it a couple times, sprayed spots that were rusty every tires change, but there was large patches of factory sound deadener under the floor pans, and rust spread unseen from some chips, until little pieces of deadener were peeling down, but by then there was no metal left in spots.

I think it would work good on a smooth flat surface that you could inspect often and repair any chips, but for a car, unless you have a lift and lots of spare time to wash and inspect the underbody every couple months. Its going to to do more damage than help in many cases.