Car Rust

[David]

I wouldn't bother, they have drastically changed the formula and it didn't work worth a sh_t on my Tacoma. I cleaned the frame but as the instructions say "leave a little rust". Two days later the rust was breaking thru, I haven't gone under the truck lately but I'll guess the rust is still coming thru. This was two years ago.
YMMV

Post in thread 'Rust Converters, Fact or Fiction'

Nov 17, 2022

Time for an update. The truck is on the road but I can't say I'm pleased with the frame.
I bought LocTite Extend because my research showed it was the best compromise of all the products out available. I followed the instructions to the letter, brushed on two coats and within two days the rust was bleeding thru. Talked to the local LocTite rep and he sent me another bottle to try, it was better but rust still bled thru within a week. I ended up putting on five coats of the stuff in a couple of places and the rust is still bleeding thru. So I used the rest of the bottle and covered the...

• YotaBota

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Well that's disappointing. It was back in Edmonton in 2003 that I last used it so it was a while ago.

 

[Darren]

We had a service truck that carried diesel fuel, engine/hydraulic oil and grease to service our forestry machines in the bush. It was an 85 chevy 4x4 that was beaten pretty badly. From the cab forward was rotten, from the cab back it was like new. It was the funniest thing to see. I guess 20 years of oil and fuel spillage, probably from the used oil pails/filters was enough to keep the rust away.

On my own vehicles I use fluid film, or a wax/oil mix. Both work well, even on existing rust. You just have to keep up with it.

 

[David]

We had a service truck that carried diesel fuel, engine/hydraulic oil and grease to service our forestry machines in the bush. It was an 85 chevy 4x4 that was beaten pretty badly. From the cab forward was rotten, from the cab back it was like new. It was the funniest thing to see. I guess 20 years of oil and fuel spillage, probably from the used oil pails/filters was enough to keep the rust away.

On my own vehicles I use fluid film, or a wax/oil mix. Both work well, even on existing rust. You just have to keep up with it.

My dad's truck, a 1968 Ford F100 spent so much time on gravel roads that been freshly oiled that it had about 3/8" of tar on the undercarriage. When it died with 480,000 miles, it had zero rust.

 

[Downwindtracker2]

Coldwar Motors, an Albertan Youtube channel does a lot of rust repair. A fun watch.

 

[Bandit]

Be careful of doing rust repairs and then just putting primer on, not all primers seal the surface they are on. Some will/do let moisture though to the metal. The paint put on top of them does the sealing. As stated above, many of the rust areas have really started on the back side of the metal. I think all? automotive body have recesses and grooves/seams to catch and hold moisture and road crud/salt, generally in hard to get at places.
I have also noticed? a lot of steel now seems to rust faster/sooner/easier then used to, is there a difference in the steels or is it the air having more stuff/contaminates in it. Thinner car body metal does not help.
Not trying to start something, maybe just didn’t pay attention to it before.
A friend used to spray his cars under side with gear oil and in side panels he could get at, gave them “a special smell”.