| Clive Sherriff wrote:
> David, 
> 
> First thought is to use the old tank - by cleaning the inside 
> thoroughly and coating it with tank sealant as was common 
> practice in the aircraft industry.  This "Slosh Tank Sealant" 
> is available from some car suppliers, and directly from 
> MMM as 3M 776 FUEL RESISTANT COATING FUEL 
> TANK SEALANT
> 
> Ive used this very successfully on some quire horrendous 
> leaks - just remember to take out the fuel level sender and 
> any fuel filters etc first!
I used this to save a very badly rusted fuel tank on a VW camper some 
years ago. The result was spectacular. First I etched out the tank with 
muriatic acid (from a swimming pool supplier) and water with about a 
pound of big bearing balls included. I sealed the openings with packing 
tape, then filled it with the acid and water and balls through the last 
opening and then sealed that. Then I shook the tank, letting the balls 
break the rust off as the acid and water mix loosened and dissolved the 
corrosion. I poured off the acid and water and recovered the balls, then 
let the tank dry in the hot Sunlight for a couple of afternoons, then 
used the sealer.
I got the sealer from an aircraft supply place. There are basically two 
kinds: one for normal petrol and one for petrol with alcohol. The 
coating for normal unleaded petrol will deteriorate if you use fuel with 
alcohol added and since I often encountered this "gasahol" mix on the 
road, I went for the extra expense and used the uprated sealer. It 
worked a charm; no more rust problems.
-Rock     http://www.rocky-frisco.com
--
"JJ Cale Live" CD & Video: http://www.rocky-frisco.com/calelive.htm
The Wednesday Night Science Project: http://www.wednitesciproj.us
Larry Spears and the Hapless Romantics: http://www.larry-spears.com
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