Protecting metal w/out paint.

[Sandmanbjj]

I bought a gallon of evapo-rust from the auto parts store to try it out. I poured it in a 5 gallon bucket and let this rim sit in it for 24 hours. clearly I didn't have enough to cover the entire rim. so after 24 hours I flipped it over. I does work, but it's expensive ($29 a gallon). you can see the rust band where i couldnt submerg the rim. but the entire thing started like the rust band.

 

[BaconBitRacing]

I tried it, IMHO it’s not worth the high price. I’d rather put in the time with a wire wheel (if applicable) and I know Denny is a fan of sandblasting.

 

[Denny]

Sandblasting but might have to rethink the evaporust. It did a great job and is reusable until dead just have to strain out all the big chunks. Citric acid they say works real good too.

 

[Sandmanbjj]

I tried it, IMHO it’s not worth the high price. I’d rather put in the time with a wire wheel (if applicable) and I know Denny is a fan of sandblasting.

I don't think it's worth the cost either. I could have done the same in 20 min with a wire wheel.
but I can see soaking small parts in some of it. I got the "gel" version of it also. that was a complete waste. it was just chunky stuff that did not hold onto anything and did nothing.

 

[G.W]

Evapo rust is great for some things, not with others. I have an intake manifold for a 232 v6 that sat outside and the intakes are corroded to hell, I can't really get in there with a wire wheel so evapo rust is what I'm going to use. However my ct90 body that was literally covered in rust I used wd40 and steel wool.