1970 Oldsmobile 98 Convertible

[BNTZ57RDMASTER]

I just recently purchased a 1970 98 Convertible but the car does not have the proper fuel tank in it. Can anyone tell me where I might find the proper tank?

Thanks

[rocketraider]

Had you contacted me two years ago, we pulled a 1970 tank/sender out of my buddy's 66 Starfire (it was wedged in the straps with a 4x4 timber, I kid you not). After it sat around a year and no-one wanted it, it went to the metal recycler's.

You'll have to find a used tank or if you're lucky, an NOS one.

[BNTZ57RDMASTER]

Can anyone tell me if there were any other years for this car that the gas tanks were identical?

Thanks

[rocketraider]

Parts book shows 1969 and 1970 98 use the same tank. There's one number difference in 88 and 98 tank part numbers, and the 88 tanks are the same 67-70. I don't know for sure what the difference is.

I think someone on the Buick Forum has a Hollander Interchange Manual. It will tell what other cars' tanks will work.

[joe_padavano]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: rocketraider</div><div class="ubbcode-body">Parts book shows 1969 and 1970 98 use the same tank. There's one number difference in 88 and 98 tank part numbers, and the 88 tanks are the same 67-70. I don't know for sure what the difference is.

I think someone on the Buick Forum has a Hollander Interchange Manual. It will tell what other cars' tanks will work. </div></div>

Actually, according to my Hollander, the 69-70 98 tanks are the only ones shown as an interchange, and that's only if the car does not have evaporative emissions control. For 1970, EEC was a mid-year addition and that tank is unique. I've also noticed that Hollander is VERY conservative on exact replacements, so other C-body tanks may work. As an example, Hollander shows that only the Oldsmobile spindles will interchange on the 68-72 Cutlii, but I've personally done disc brake swaps with parts I pulled from a Monte Carlo and a Tempest. Also note that the main differences for the 67-70 tanks will be the vent tube configuration. You can try an older tank and reconfigure the vents to match or have a qualified shop modify the older tank with the appropriate vent tube fittings.

Failing all else, there are a number of street rod vendors who will custom fabricate fuel tanks. It won't be original but you'll be able to drive the car.

(Yes, Glenn, I responded to this first over at classicoldsmobile.com)