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

Does what it says. Trust in the science behind it. Running this product in several engines built before the 1970s that have remained in continual operation since new. Gives you the lead substitute chemical plus an additional "stated" octane boost. We have our engine oil analyzed proactively and we are not seeing any abnormal signs of internal engine degradation. Easy to add when fueling. The goal is routine operation of your aging vehicles with a sustained heat cycle. Machines are like the human body; use it or lose it!

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.

You can actually sense the improvement.

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

Highly recommend

There is nothing wrong with the product, but it was shipped in a soft bag and had been damaged enough to cause leakage. The ups carrier gave me the option to refuse delivery but the leakage was only about 1oz and I accepted it

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 !