[AZStrider]

First off was there a 280zx made with 2.3 liter, if so what year.

Second, what type of gas does a 1980 280zx preforme best on; regular, plus or premium?

 

[AZStrider]

Don't answer the engine size question, please.

 

[yo2001]

91 octane or higher is factory recommended

 

[fantaz]

You never heard of a 230ZX? (sorry)

 

[zspeed]

Premium gas will give you about 2 hp to 3hp more than regular. Hope this helps.

 

[Cat3 80 280ZX]

I have a 1980 ZX... and i ran it on Regular unleaded for as long as i've owned it... . and it started pinging...
so... i've started using premium... and have gone through a couple bottles of fuel injection cleaner and the pinging has since gone away.

so.. in short.,.. if you can afford it... use premium!
my 2 centavos

-Justin