71 RR 383 stock

[RR71RR]

I’ve found a Non-ethanol gas station. Really happy about that but do I have to put any additives in the gas for lead?

 

[WileE]

Depends on the heads you have on the engine.

 

[71RRHI]

I run non-eth with no additives in My 71. Stock 383 except for headers, ignition, and aftermarket carb. Have not had any problems

 

[440Coronet500]

I've had STP lead additive stick the piston rings in the grooves, I would never use that garbage! 440'

 

[lewtot184]

i think you'd be better off not chasing a lead additive. to best of my knowledge real tetraethyllead is illegal. other metallic additives aren't good for the engine long term. i do the unleaded exhaust seats with ferrea 5000 series valves. not overly expensive but does eliminate the valve recession concerns.

 

[bee71]

I've used Motor Medic lead substitute for years with no issues.