Rust Treatment

[MY95]

So theres a fair bit of surface rust under the boot floor on the 306, some parts fine some with bad surface rust, looking at wire brushing then sanding and using Hammerite Kurust and then painting over in silver then snading down again if necessary then another coat of pain(same colour as the car), has anyone used Kurust?
I know most people use deox gel and a good few other products but I don't fancy spending that much, however it does not look that much more expensive, what would people advise on a budget?
Any thoughts and opinions appreciated.
Cheers guys.

[madmadmax]

krust is only a surface treatment, you will need to remove all the rust if you whant to stop it and then treat it with rust prevention

i am just getting into reserching whats best to use it looks like its going to be por15 after some elbow grease

http://306oc.co.uk/forum/showthread.php?tid=22973

[ghandi0007]

So theres a fair bit of surface rust under the boot floor on the 306, some parts fine some with bad surface rust, looking at wire brushing then sanding and using Hammerite Kurust and then painting over in silver then snading down again if necessary then another coat of pain(same colour as the car), has anyone used Kurust?
I know most people use deox gel and a good few other products but I don't fancy spending that much, however it does not look that much more expensive, what would people advise on a budget?
Any thoughts and opinions appreciated.
Cheers guys.

ZINC PHOSPHATE PRIMER , from johnstons paint shop quality stuff , i use it in the painting trade all the time

[Matt-Rallye]

I just go at mine with a grinder & wire wheel, get rid of the surface rust entirely then put 3-4 coats of hammerite on. Could always paint over the hammerite in cherry red if i wanted to

[pug306driver]

For rust removal from removed parts like the battery box etc, try tesco no added sugar lemon squash concentrated, about £1.50 per 1 1/2 litres, use neat but dont drink it afterwards. I got some more when it was on bogof.

Get some and try on a rust bit of steel and post the pictures, it takes a while but you will not believe the results unless you do it your self. Just submerge the part you want to de rust and leave.

Its better if you can remove as much of the crap/rust as you can before hand, more economical.

The 1 1/2 litre bottle is better value than the 750cc bottle.

I have used the brown kurust paint and was not impressed, rusted underneath after a short time, say 3 months. Have used hammerite and that does the same after more time, but have used the aldi metal care paint which is on long term all weather outside test, will try and post some pictures/results of that paint which looks quite good after a good 6 months outside test.

The best stuff I have come across is a water washable brush on white rust treatment paint that turns rust purpley/black. and was waterproof.

Used a similar stuff that was a disaster, rusted like mad under this paint as the stuff seemed to absorb water thru a chip and literally rusted away the metal to nothing quietly under a good looking paint top coat.

Wish I had a largeish workshop with lift etc so I could do same underneath, well worth the effort. Nice.

Blue beam, yellow arms, some green somewhere and red calipers, silver wheels......all underbody white.