Originally Posted By: Ethan1
There are lots of problems with that theory.
- Every panel has two sides, and the other side is usually not easily accessible or visible. Air and water are going to get in through the microscopic rust holes.
- Most rust starts from the inside of the panel anyway.
- FF is not going to form an impermeable/non-porous layer over the rust. Even automotive paint is not 100% non-porous.
- It's a well-known fact that Fluid Film has to be re-applied regularly. 6 or 12 month intervals are frequently cited. At various times in your Fluid Film interval, your level of protection is "better than nothing", "alright", "marginal", "poor", and eventually "non-existent".
Well, it's clear you don't like it, for whatever reason, but you reasoning on most of these is a pretty big stretch.
It will stop continued rusting by coating the rust and preventing water, salt, etc. from getting to it. Using oil-based coatings to stop or slow corrosion is well-known, time-tested method. It's not like FF is the only product of this kid.
If it's a panel that can be rusted from the other side, then nothing will stop it unless you protect the other side. I don't think that's going to be "most rust."
You're exaggerating on how quickly FF will wash off. My experience has been it really only washes off of high-spray areas like wheel wells with any speed. An annual touch up in the fall is all that's needed, at most.
If you don't want to use it, don't use it. But it can and does work. It's easy and affordable to buy and spray, unlike some of the other anti-rust products. That's why it's popular.
