Rust remover... July 06, 2021, 07:24:10 PM I bought a bottle of this stuff about 15 years ago when I was in a local DIY store.Didn't need it at the time and the only reason was they were flogging it off cheap in the bargain basement bin, think I just paid a couple of £'s.It's been on a shelf in the garage ever since and survived a few clear outs.Don't know what made me do it but filled a plastic box last night and bunged in a stack of MK2 bolts, ones from the sub-frame and the like, so a few of them were pretty rusty.Couldn't believe it when I took them out after 12 hours - rust completely gone on the better ones and mostly on the worst.Better than that, I thought I'd give them another 12 hours and the ones that'd completely cleaned themselves the first time around took on the dark grey finish you see on the one in the image, previously they'd been bare steel. Wish I'd taken some before photos!The blurb claims not only to remove rust (as opposed to converting it as Kurust does) but also to prevent treated items from rusting again, have to assume that's something to do with the new finish.Unless my old bottle went nuclear after having been stored for so long I'd recommend giving this stuff a go - cheapest seems to be around £8.00 for 500ml to which you add 2.5 litres of water.It looks like you just keep using the solution, probably topping it up with new concentrate as the level drops, so potential for good value.https://hg.eu/uk/products/hg-rust-remover
Re: Rust remover... Reply #1 – July 06, 2021, 09:08:59 PM Likely that if you’ve had it that long your bottle willContain different stuff than what you’d get if you bought it new.So many chemicals have been banned that many of these type of products aren’t as good as they used to be.I had a meeting with a good few years back, with a company that do grease and lubricants for commercial / agricultural equipment. They had to change their business approach to meet regulations but he told be about the couple of barrels of the old rust treatment he had stashed in his garage for personal use. That’s the same reason nitromours no longer strips paint like it used to and many other products are crap. Anyway, glad it works use it sparingly in case it can’t be replaced
Re: Rust remover... Reply #2 – July 07, 2021, 10:55:38 AM Doesn't give much away on the label other than to say it contains 'phosphoric acid', no mention of proportion etc.You can only by this stuff in 500 ml bottles which gives you 3.0 litre of solution when diluted, not alot if it's a bigger item being treated. Had a very quick look and you can by phosphoric acid on its own in larger quantities quite readily and without any obvious restriction (even to post it seems OK - one seller stipulated mail order only).
Re: Rust remover... Reply #3 – July 11, 2021, 11:54:48 AM Bit of an update - Brings a whole new meaning to nut'n'bolt restoration.These are two of the four bolts that attach the PAS rack to the subframe... replacements are expensive for what they are, if you can find them so worth a bit of effort sorting out. Some of the other, more regularly sized bolts can still be bought from VW (fair'ish price) or specialist suppliers (good value), and not really worth the while refurbishing if they're too corroded.They weren't overly rusty to begin with but still had some... wish I'd taken a 'before' pic. to highlight the difference.The solution all but got rid of the rust, then they'd a go on a wire wheel before bathing them once again over night - have since read the grey coating is rust inhibiting with the bonus of giving them a new look.
Re: Rust remover... Reply #4 – July 11, 2021, 03:24:44 PM The results are quicker and better than using diluted molasses Good that there is a rust inhibitor coating since it only takes minutes for the rust to return.
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