anybody have dual fuel tanks?

[mike16]

I have a 68 K20. it has aftermarket dual saddle tanks mounted under the bed behind the cab on both sides in addition to the factory cab mounted tank.

Looks like its all there and complete but has not been serviced or used in many years.

Pulling everything down and cleaning it up seems easy, but how do you clean out the tanks them selves. They look to be about 15 gallons each. 1 foot wide 1 foot deep and 2.5 feet long.

I was told to take them to a radiator shop and have them boiled out.

dont want to go the sealer rout, just want to clean them out and get them back on line.

what works for you?

Thanks

[70's luvr]

I put some gas in, swished it around and dumped it out. I'm running a cartridge type external fuel filter right after them so I'm not worried to much about crap in them.

[Stocker]

My '72 has them and they are still in use. Can't say what's the best way to clean yours but I agree with the above post -- run a good fuel filter.

[agawam]

I got 'em came on a 67 I just purchased, they're not hooked up, haven't investigated them yet

[Already Gone]

Have you checked to see if there is a drain plug on the bottom of the tanks. I had a set of "Travel Tanks" tanks on a truck I had and they had the bottom drain plug.

[mike16]

mine have the drain plugs. What solvents work to desolve old gas? been told to put a 4 foot chain in the tank and rattle it arount to loosen up debris. what else workes?

[jocko]

Believe it or not, a radiator shop is very good at doing this. The "old-schoolier" the better.. They have the ability to pressurize, check for leaks, convert the rust and thoroughly clean it out. Not all will do it, but most mom n pops will. I have the same problem and still need to address it. But I moved and miss my local radiator shop in good ol Ridgecrest CA big time! Am sure there's one around, just haven't looked yet. The other alternative is to buy an inner tank resto kit from a place like Eastwood. They are pretty simple - you clean it out as best you can. Then you pour in their stuff - certain amount per gallon of tank capacity, and slosh it around to cover all interior surfaces, etc. If you have pinholes, that is a whole different ballgame - need to do a little gas-free-engineering first (i.e. don't weld pinholes or anything like that on a tank - it may appear dry as a bone, but combustible fumes may remain - if you need leak repair, take it to a professional first. Then you can do the rest of the process. http://search.eastwood.com/search?w=...%20restoration

[special-K]

I have triple tanks, don't you? I'd go with a radiator shop

[mike16]

yes the in cab factory tank and those two,each on both sides of the frame tucked up under the bed in front of the rear wheels. total; three.