Jump to content




Recommended Posts

Back in the good old days your engine was fitted with silicon/bronze valve seats which are not suitable for unleaded fuel. You will burn the valves and seats using unleaded for prolong periods without a lead additive. I think Nissan changed to steel seats in Australia around the time the 280ZX came out, but I think that was more to simplify production. Australia didnt change to unleaded until 1985.

The 98 is your best choice plus a lead additive or rebuild the head with steel seats which translates to a lot of lead additive.

BTW Premium leaded was around 97 octane. GTHO's, RT chargers and XU1's loved the stuff. Thats my Gen...


Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Create New...

Important Information

By using this site, you agree to our Privacy Policy and Guidelines. We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.