Opinions please. My Z was built 12/70, and has the original plastic "Reservoir Tank" (also sometimes referred to as an evaporation tank, as part of the fuel tank / fuel supply / emissions circuit). I understand that a metal reservoir tank was fitted to later models.

From a longevity standpoint, is the metal tank generally considered to be more durable? Or, put another way, are the plastic tanks prone to failure? If so, are the two tanks interchangeable?

Thanks,

Gary S.

In general, a metal tank would probably last longer than a plastic one, but after 30 years, both would be prone to potential failure.

Check out the link I left you in your thread about removing the evap tank. That might be the best way to go.

Opinions please. My Z was built 12/70, and has the original plastic "Reservoir Tank" (also sometimes referred to as an evaporation tank, as part of the fuel tank / fuel supply / emissions circuit). I understand that a metal reservoir tank was fitted to later models.

From a longevity standpoint, is the metal tank generally considered to be more durable? Or, put another way, are the plastic tanks prone to failure? If so, are the two tanks interchangeable?

Thanks,

Gary S.

I don't think they are "exactly" the same size. The interior panels that conceal the evap tanks are shaped different for the metal evap tank equipped cars than for the plastic evap tank equipped cars.