104+ Performance Max Octane Boost and Lead Substitute (10410)

You can actually sense the improvement.

I have two old cars with soft valve seats. They need lead to lube the top end and avoid excessive wear. Ethanol gas (10%) is murder. Use this and SeaFoam (or similar) to mitigate this issue. You might get strange looks at the gas station, but who cares.

Awesome customer service! Professional item ...says all. Thanks!

Use it in a Harley with performance mods. Improved performance band on bottom and top end. Top shelf product. The real deal

Highly recommend

Take care of your car and it will take care of you. Runs good with this added..

Lead substitute and octane booster in one product, for old engines without hard valve seats in the heads. It’s for valvetrain protection, not for mileage. Not cheap.

Seems to have more power and after a tank seems to Idle better but not much could be my imagination but not to experience really! maybe just cleaned my injection Only a 2.3 4 cylinder but only used a half a bottle! On second tank with other half see if anything improves but runs pretty good with 230,000 on 94 engine worth the try Mike !

J’avais mie le 3/4 pas tout à fait avec 60$ d’ordinaire le reste du produit dans le vtt avec du super là y me reste le 1/4 de la bouteille…. Jais pas fini de bruler le gaz pas vue de différence