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How to stop flash rust occuring

Posted: Mon May 22, 2017 2:24 pm
Author: swampy
Hi chaps
Quick question for you i have just ordered some deox-c and would like your suggestions to stop flash rust occuring.
I thought maybe a bit of 2 stroke mix swilled around but there may be simpler cheaper methods out there.
Over to you guys.

Re: How to stop flash rust occuring

Posted: Mon May 22, 2017 11:08 pm
Author: chrisNI
I've been trying this stuff in my A7 tank, it's been in there 24 hours and it's starting to look really good nearly all gone, I'm kind of thinking it took 46 years to get this bad, how concerned do I need to get about it suddenly rusting again :shock:

Re: How to stop flash rust occuring

Posted: Tue May 23, 2017 5:08 pm
Author: Keefleaf
Boiling water might work. Pour in,-pour out,-So hot water evaporates.?

Re: How to stop flash rust occuring

Posted: Wed May 24, 2017 2:40 pm
Author: chrisNI
Or WD40 if you're the kind of person who buys it by the gallon. Which is the best way... :D

Re: How to stop flash rust occuring

Posted: Wed May 24, 2017 5:48 pm
Author: Jay1969
ACF-50 doesn't evaporate but by golly it'll prevent rust. Used in the aviation industry. Expensive stuff though :(

Wouldn't it be better to just seal it as quick as possible with that POR15 liner stuff?

http://www.frost.co.uk/por15-car-bike-m ... ealer.html

Or Petseal - https://www.amazon.co.uk/Petseal-Ultra- ... B006VB6E02

Re: How to stop flash rust occuring

Posted: Wed May 24, 2017 8:05 pm
Author: ADRIAN H
Rinse with some old petrol and coat with Wd40 or 3 in 1 oil.

Re: How to stop flash rust occuring

Posted: Wed May 24, 2017 9:55 pm
Author: freddyz1r
WD40.... chuck a load in , swill around so it covers every bit. (You can even re-use all the surplace on some other little job :wink: )
Cheers freddy

Re: How to stop flash rust occuring

Posted: Wed May 24, 2017 10:01 pm
Author: KeithZ1R
white spirit

Re: How to stop flash rust occuring

Posted: Wed May 24, 2017 11:24 pm
Author: compo z1r
forget cheap I use this stuff on my jet ski for salt water dogs dangly's

http://www.ebay.com/itm/BRP-293600016-B ... 5B&vxp=mtr

Re: How to stop flash rust occuring

Posted: Thu May 25, 2017 6:56 am
Author: kev edwards
As soon as you have rinsed it out and got as much water out use an old cotton tee shirt cut into strips to mop up an more water pull these out the put about a litre of WD or similar in it and swill about, empty out, job done.

Re: How to stop flash rust occuring

Posted: Sun Jun 11, 2017 8:14 am
Author: swampy
thanks for the replys chaps.
deox-c went in the tank yesterday afternoon. how long should i leave it in. would it be safe to leave it inl all week, or should it come out after 72 hours?

Re: How to stop flash rust occuring

Posted: Tue Jun 13, 2017 3:15 pm
Author: csx355
I have used Phosphoric acid both inside tanks and on other corroded steel. This http://www.ebay.co.uk/itm/5-LITRE-PHOSP ... Sw9N1VsUEz is 85% which you need to dilute somewhat but it does give fantastic results and at £20 / 5lts delivered it's pretty good value.

Re: How to stop flash rust occuring

Posted: Tue Jun 13, 2017 6:20 pm
Author: chrisNI
swampy wrote:thanks for the replys chaps.
deox-c went in the tank yesterday afternoon. how long should i leave it in. would it be safe to leave it inl all week, or should it come out after 72 hours?



I left it in my A7 tank for about a week, sloshing regularly, with no ill effects, then rinsed with WD40. The inside of the tank looks like new now :D

Re: How to stop flash rust occuring

Posted: Wed Jun 14, 2017 6:24 am
Author: swampy
I have heard of using phosphoric acid but was worried about damaging paint. ive bought some 2 stroke oil and I will slosh a gallon of 2stroke mix about and see how that goes.