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Re: [GMCnet] Gas tank cleaning up date. [message #323100 is a reply to message #323093] Fri, 01 September 2017 09:18 Go to previous messageGo to previous message
GMC.LES is currently offline  GMC.LES   United States
Messages: 505
Registered: April 2014
Karma:
Senior Member
I've tried several rust removal recipes over the years which include molasses, battery charger and washing soda, muriatic acid, vinegar, etc.

The one I like the best is the vinegar as it is the cheapest, least amount of mess, and the acid isn't strong enough to be a risk. All the processes I've tried take soaking time with the exception of the muriatic, which only takes minutes in comparison, but is very harsh on the metal and everything in the vicinity.

I use pickling vinegar and re-use the solution a couple of times before heavily diluting it and pouring down the drain.


Les Burt
Montreal
'75 Eleganza 26'


> On Sep 1, 2017, at 8:05 AM, Rob Mueller wrote:
>
> Steve,
>
> Being that I am a lazy bastard I just brought the tanks out of The Blue Streak to Redi-Strip here in Sydney and for $400.00 I got
> them back with absolutely no rust in them!
>
> I have a flexible borescope I used to check ever nook and cranny and found NADA!
>
> Unfortunately one of the tanks has more holes in it than Swiss cheese so I am not sure how to proceed.
>
> I am preparing to head for the USA over the weekend (I fly out Monday AM) and don't have time to go down to my workshop and take
> photos.
>
> Regards,
> Rob M.
> The Pedantic Mechanic
> Sydney, Australia
> AUS '75 Avion - The Blue Streak TZE365V100428
> USA '75 Avion - Double Trouble TZE365V100426
> USA '77 Kingsley - TZE 267V100808
>
> -----Original Message-----
> From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of Steve Southworth
> Sent: Friday, September 1, 2017 6:18 PM
> To: gmclist@list.gmcnet.org
> Subject: Re: [GMCnet] Gas tank cleaning up date.
>
> I tried the "scrub it out" method using hardware (washers and 1/4-20 nuts). It did a fairly good job. Problem is getting the
> "stuff" (rocks or hardware) out after it's done it's job. I have one spare I'm still trying to get the hardware out of. I work on
> getting the hardware out when I feel I can tolerate the frustration for a while.
>
> GMCMH tanks are different in that they are so wide, so shallow and have internal baffles.
> --
> Steve Southworth
>
>
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