Jos78

jaunty75

No one makes new gas tanks for big Oldsmobiles of this era. Your only hope is to either get yours fixed, which appears not to be possible, or to find a used one from another car. A tank from any full-size '68 Olds (98, Delta, Delmont) would work. Not sure if earlier or later years would.

Olds64

You might try to coat the interior of the tank with a restoration kit.



You can also paint the exterior with a durable paint like Rust O Leum or POR-15. This might seal the crack. Of course, you can also try one of these repair kits:



A friend and I fixed the gas tank of his wife's Mercury Cougar with a kit like the 2nd one. It worked great. I also used the 1st kit I linked to restore the tank on my 71 98. It was a good investment.

m371961

Did you try any old school radiator shops in your area? Many years ago I soldered a few by first filling the tank within a inch of the repair with water then cleaned, used acid flux and a acid core solder. Maybe I was young and dumb, but that's how I did it.

Allan R

Saw a few at DVAP Call and find out if they're still good

https://www.dvap.com/salvage/1968-ol...ble-680l2963d/

https://www.dvap.com/salvage/1968-ol...ght-68ol5895d/

https://www.dvap.com/salvage/1968-ol...ght-68ol1537d/

https://www.dvap.com/salvage/1968-ol...ght-68ol2963d/

https://www.dvap.com/salvage/1968-ol...ght-68ol8965d/

Jos78

Olds64

If you decide to use a fuel tank restoration kit make sure you wear PPE. Latex gloves, safety glasses and a respirator are mandatory.

jaunty75

You know, I wonder if the tank I bought for my '78 Toronado would work. I have a '67 Delta 88, and I'm guessing the tank in that car is similar to the one in yours.

I removed the tank from the Delta a few years ago to clean it up and replace the sending unit. Here's a couple of photos of it I took at the time.






I replaced the tank in the Toro, and here's a couple of photos of the new one I took before I put it in. (That's an old sofa cushion underneath it, just to hold it up a little bit while I was installing the sending unit.) New gas tanks are still available for a '78 Toro. I know it's not identical, especially because of the bulge where the sending unit attaches. But it is otherwise basically the same shape. The sending unit is in the same place. The filler neck is in the same place. One thing the Toro tank doesn't have is vent holes in the corner that you can see in the lower photo above. If the tank on your '68 has vent holes, you might be able to accomplish the same thing either by putting in a sending unit like the one shown for the '78, which has a vent line, or get a vented gas cap. In fact, if you get this Toro tank, you would want to get a new sending unit for it as well since you're replacing everything, anyway. So a new tank AND new sending unit. The sending unit wires up exactly the same as for your car. The black wire to ground and the brown wire to the sending unit. Should work just fine with your gas gas gauge on the dash.

So the possible issue is the hump where the sending unit is located. You might need to pad the top of the tank around the hump so that it fits evenly and snugly against the underside of the car when you tighten the fuel tank straps. But otherwise, can anyone see something about this that won't let it work?

Allan R

The hump will be the problem. It looks to be about 2" too high. That's huge when fitting a tank. Only way to make the Toro tank fit would be to cut that section out and weld in flat metal. Not worth it.

Jos78