Lead additive for old engines

Powershield does not boost octane. If you dont need the octane your car isnt going to miss the lead.

The crack wasnt visible from the outside at all.

Lead additive for old engines. New engine valve seats have been hardened to avoid this problem but older model engines were designed for leaded fuels. These vehicles need a quality lead substitute. PFS Lead Plus is a gasoline additive that also creates an oxide which coats the valves and seats and provides the protection that you need to avoid premature valve recession.

Enter lead replacement additives. These products have been specifically designed for use in classic vehicles to protect your engine without the need for an expensive modified head and labour-intensive activities to replace vital engine internal components. Carlube Lead Substitute supersedes potassium-based Nitrox 4 Star Lead Treatment and manganese-based 4 Lead Substitute and Octane improver.

This additive is said to prevent engine knocking and pinking in addition to preventing power loss due to valve seat recession in older vehicles. Lead additive is a myth anyway. If you dont need the octane your car isnt going to miss the lead.

The whole thing about cushioning the valve seats and stuff like that is an old mechanics tale. Lead was added to boost octane in the 1950s and everyone kind of assumed that their cars needed it. The XL Nanolube Engine Oil Additive Nano Treatment is a specialized formula designed to reduce engine buildup while increasing mileage efficiency.

According to the manufacturer this product is designed to make old engines new again It even reduces emissions by bringing down the amount of oil that is being burned or broken down. Lead as valve lubricant was a consideration in old engines. The kind you re-ground the valves every 20-40K miles in a car for example.

By the mid 60s routine valve grinding was already a thing of the past because they didnt need soft seats to ensure the valves would seal due to improved manufacturing and materials. Keeping the Engine Safe. Modern additives that protect older cars from ethanol are important formulations.

These solutions keep the engine safe from excessive condensation rust and erosion. Any fuel additive for a classic car then must be ethanol-compatible. Some classic cars are designed to accept lead gasoline.

ZDDP was actually invented in the 1940s and first used as a metal to metal anti wear additive in airplane engine oil. There is a lot of information available about the benefit of ZDDP in low tech high friction vintage flat tappet engines and why its preferred for wear protection over todays oil designed for low friction roller cam engines. Lead provided lubrication for the old unhardened valve guides.

If your motor was rebuilt after 1982 it is most likely ok with hardened guides. Im not sure that I share K10s views but then again I run 93 in almost every vintage engine and especially in the bikes. It makes a huge difference in some engines and not so much in others.

Hi folks I have been giving this subject some serious thought regarding lead additive for the reason my old suffolk 75cc cast iron engine had begun to knock and eventually the bore of the cylinder cracked horizonally. The crack wasnt visible from the outside at all. Only internally and was a large enough crack to lock the engine up immediately.

Lead in the form of tetraethyl lead was an integral part of the blending of gasolines between the 20s and 70s. It boosted octane ratings and quite unexpectedly acted as a. Classic Valvemaster formerly branded Castrol Valvemaster is the most effective and cost-effective lead replacement additive available for the protection of early vehicles designed to run on leaded fuel.

Valvemaster with its unique phosphorus formula protects against valve seat recession under all driving conditions. Using lead additive for a couple of tanks of fuel will probably make your tractor good to go for at least 6 months. I had one old tractor dealer tell me that most tractors have enough lead already on them that you need not worry ever.

Certainly if hardened valve seats have been used on a recent engine rebuild lead is not necessary. 3 Jan 9 2016. Lead in the gas was originally as a additive to help with valve lubrication.

It was also to remove some detonation from a spark that was incorrectly set. Since the understanding of oil has increased and better lubrication of the components has increased the need of leaded oil became moot. Tetraethyl lead was used in early model cars to help reduce engine knocking boost octane ratings and help with wear and tear on valve seats within the motor.

Due to concerns over air pollution and health risks this type of gas was slowly phased out starting in the late 1970s and banned altogether in all on-road vehicles in the US. The theory behind lead substitute is that when the engine in your classic car was designed and built gasoline had lead in itmore specifically tetraethyl lead or TEL. That lead served several functions.

It boosted the octane rating allowing for higher compression ratios. And reduced wear on the valve seats. Tetraethyl lead a colorless oily poisonous liquid commonly called lead was used as a gasoline additive for automobiles made between the mid-1940s and the end of the 1970s.

There were several reasons for adding lead to gasoline. First lead improved the way that gasoline burned. Lead was used as an additive in petrol from the 1920s through to the beginning of 2000 when it was banned by European Regulation.

Lead allowed the development of higher octane number fuel the higher the number the greater the resistance of the fuel to uncontrolled burning in the engine or detonation and was also discovered later to have the property of protecting valve seats from wear. Engines in the 70s and earlier did not have hardened seats nor did they require them since fuel was leaded. Many of those old engines are still in use today so there is indeed an issue with them.

However adding a lead additive is probably not as effective as one thinks and will not break the bank by using it is a waste of money. Incidentally lead also is used to boost octane or anti-knock quality to gasoline. Powershield does not boost octane.

So if your old engine needs a high-octane fuel you might consider using an. Lead keeps the motor running cooler and helps with added lubrication. Lead has been removed from fuel because it cannot be used in vehicles with catalytic converters which is just about everything these days.

If you buy race fuel VP C12 its usually leaded. Not sure how good the lead additive. Lead was originally added to gasoline as an upper cylinder lubricant.

It lubes the valves and seats. If you rebuild the motor you could use hardened seats and valves and unleaded fuel. But if your old tractor runs good a simple lead substitute added to the gas is a perfectly reasonable solution.

If the engine is running on its original softer valve seats there are lead substitute additives available. If its been rebuilt with hardened seats lead substitute is probably not necessary. If you have not replaced the rubber fuel lines with high-grade alcohol-resistant material I would recommend running E0 or use an ethanol treatment such as Sta-Bil marine formula.