Rust Prevention

renofan

I was doing some work on my '97 Laguna so its been off the road a while. I have it stripped out (all that is in the interior of the car at the moment is the top half of the dash). While I'm at it and because I'll be keeping the car for good I was going to do some rust prevention.

Is this stuff any good or would it clog any drain outlets in the doors/boot lid etc. Want to do the doors/boot lid/sills/bonnet etc. Would one or two cans do?

Thanks

dgt

On the phone so can't see the link..... What I normally do is use karust and paint over it with hammerite

Katunga

at work we use Dinitrol as a corrosion preventive on aircraft . If it's good enough for boeing and airbus I'm sure it more than do the job on the car.

Pj!

When using these products on older cars would it be required to remove any existing rust from the surface before application?

Katunga

it needs to be applied to a clean surface. Denitrol also would need to be reapplied at least every 2 years.

Wibbs

I found Dinitrol bloody good, though my fave would be the bilt hamber waxes. IMH Waxoyl is near useless. Back in the day it was better than nothing yes, but times and chemistry have moved on. Some have even suggested and experienced rust in sills getting worse because of waxoyl setting lumpy and pooling water. I'm dubious about painting over with hammerite. I've seen rust run along under the stuff while it looked fine.

Like Katunga says any coating you put on has to be over a clean, pretreated surface. The waxes have rust inhibiters in them, but if you leave any active rust it will creep back. So mechanically remove any obvious rust by sanding etc, then hit it with a good rust converter, Dinitrol and Bilt Hamber do good ones. The BH seems to leave a better painting surface which I found acted like a primer and stood up better over time. Then paint the area and then hit it with the wax.