0
None is needed. The car came from VW with hardened valve seats, and by now this specimen has had the heads changed--and all aftermarket heads have unleaded valve seats.
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
What was used as an additive to gasoline?
lead
What is Tetraethyl lead used for?
petrol additive
Does a 1975 Chrysler 75 hp outboard need lead additive?
No.
Do you add anything to your ford Model T gas?
Yes, I would add a lead additive.
Why do people use unleaded gasoline?
In the past we used gasoline with a lead additive in it. Since lead is a heavy metal and can cause birth defects, the US government required that gasolines be lead-free.
Why was lead demand weaker after the 1970's?
The abandonment of lead as an anti-knocking additive to gasoline and the discontinued use of lead as an insulator in water pipes, contributed to lower demand beginning in the 1970s.
What 2 things did Thomas Midgley invent that were very bad for the environment?
lead additive to fuel and CFC gases
Is there a problem with using unleaded fuel in a '67 landcruiser?
maybe, should be using a Lead substitute additive to prevent trouble.
What if you have a motor that takes leaded gas what kind of gas can you use?
most all auto parts stores carry a lead additive for this purpose, it is fairly inexpensive and works very well because it is simply a lead additive that the unleaded fuels do not have. it is complete of course with the mixture ratio instructions and they must be followed correctly, if they are not then youwill damage your valve train or valves in the engine.
What is additive in fuel?
Some additives I know of Ethyl methyl lead (octane booster and upper cylinder lube) Methyl Benzene (octane booster)
Do you need a fuel additive lead when using unleaded gasoline in your 1974 BMW 2002 automatic?
Yes, Lead is good. Your valves could be damaged by using unleaded. Try http://www.batterystuff.com/fuel-treatments/OS6q.html This is real tetraethyl lead, the good stuff.
What is the difference between leaded and unleaded fuel type?
Leaded fuel which has been banned for sale in the U.S. has a lead additive added during the refinery process.
