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Sep
Lead was used as an additive in petrol from the 1920s through to the beginning of 2000 when it was banned by European Regulation. People go back and forth in the classic world about how necessary it is.
This additive is said to prevent engine knocking and pinking in addition to preventing power loss due to valve seat recession in.
Lead additive for older cars. Cars from before about 1955 and after 1970 are made to run on low lead or no lead fuel. High performance cars 1955 - 1970 with compression above 951 MAY need octane boost some do some dont. If you want to baby your valves rings and upper cylinders you can add some Marvel Mystery Oil Redex 2 stroke oil or your favorite additive but it is not strictly.
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. 05-07-15 0658 PM - Post 2545452 Hi You folks with older vehicles what brand of Lead Additive are you using for your cars.
If you are using that stuff 1971 Datsun 510 16L. 1955 Chevy PU 3100. When the fuel burned in the cylinder it created a lead oxide powder and as the exhaust was pushed out of the cylinder the oxide coated the exhaust valve and seat which provided the barrier cushion that protected them.
New engine valve seats have been hardened to avoid this problem but older model engines were designed for leaded fuels. One bottle of Lead Substitute can treat up to 25 US gallons circa 95 litres of unleaded petrol. It is safe for use in all petrol vehicles even those that are fitted with a catalytic converter.
Well tested product Protects and lubricated valve seats Clears deposits from carburettors and fuel injectors. All fuel additives for older cars must be ethanol compatible. Some older vehicles were designed to accept leaded fuels.
When using unleaded fuels owners should add lead replacements to the gas to reduce the risk of valve seat recession. Ethanol can also cause valves to harden. Valve lubrication additives help prevent this problem.
Lead replacement additives Solutions that safeguard the engine from ethanol Corrosion inhibitors Competition valve-type lubricants 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. Older engines with cast-iron cylinder heads can use Nulon Lead Substitute Valve Saver with unleaded petrol for an indefinite period of time to avoid costly cylinder head modifications.
Lead Substitute Valve Saver provides maximum upper cylinder lubrication. The blue-bottled additive lubricates moving parts and reduces the amount of oil burned. It is recommended that owners of older vehicles add one 15-ounce bottle to their engines at the time of every oil change.
In doing so vehicle owners can help reduce the amount of metal on metal contact. 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.
Opti-Lube XPD Formula Diesel Fuel Additive. 1 Gallon with Accessories HDPE Plastic Hand Pump and 2 Empty 8oz Bottles Treats up to 512 Gallons 48 out of 5 stars 391 7875 78. 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.
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. Its excellent as a lead substitute. Buy DOMINATOR Octane Boost Not only that as its name suggests it boosts octane up to four numbers which is just as important in older high-compression engines that were made with leaded gas in mind.
It increases engine response and power in all two- and four-stroke gasoline-fueled engines. You can buy lead additive from most auto parts stores. You dont need to use race gas or octane boost or anything unless its pinging from high compression.
My friends 1970 trans am400 poncho boredstroked to 460-some odd inches uses regular 92 octane he has 951 compression i believe. He doesnt need lead because he has hardened valve seats. When it comes to storing your car if it is older than 1996 and doesnt have a catalytic converter you can use a lead replacement additive such as Castrols Classic Valvemaster which can help prevent corrosion as it also contains an ethanol stabiliser.
Its endorsed by the Federation of British Historic Vehicle Clubs. This is particularly a problem for older classic and vintage cars. Redex is dedicated to keeping cars driving even those not designed to use todays modern fuels.
Redex Lead Replacement can be added to your engine with unleaded petrol to provide your car with the additives it needs. It lubricates soft valve seats and protects them against damage. Older cars were designed to run on fuel with lead in the mixture but since this isnt available any more you can put an additive in to replace it and stop the engine wearing prematurely.
The lead also boosted the octane rating. Pretty much all older cars will run on modern 93 octane without issue and they also sell lead additive for these cars as well. People go back and forth in the classic world about how necessary it is.
Basically it comes down to what you are using the car for. The additive is not cheap – it can cost about 6 a pint. But when added to a tank of fuel it provides the engine with enough lead to keep.
Classic ValveMaster lead replacement additive. Lead replacement fuel additive for use with lead-free fuel. Protects engine against valve seat recession under all driving conditions.
Keeps fuel system clean and protects against corrosion. 1ml treats 1L fuel. One bottle will treat 250L of fuel.
NZ 2687 NZ 3090 incl GST ValveMaster Plus 250ml. Each fuel has its own problem. Despite the low-lead designation 100LL contains too much lead for the older low-compression engines.
Mogas on the other hand doesnt have enough. Some lead is needed to lubricate the valves. Robert Parker used Marvel Mystery Oil to reduce the buildup of lead from 100LL.