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You would not want to for very long. The lead acted as a cushioning lubricant for the valves. You should update the valves & valve seats in the heads. Best to contact your local automotive machine shop for this job, just take your old heads into them.

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Q: Can you use unleaded gas on pre 1970 cars?
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What make and model makes the best pre owned luxury cars?

Many Lexus cars are pre-owned and have good gas mileage. Lexus offers hybrids that have great gas mileage and that are pre-owned.


Can unleaded gas be used instead of leaded gas?

Yes, you have 2 options. First, mix in some lead substitute with any tank full of unleaded, available at most parts stores. Seond, you have to remove the cylinder head(s) and have a machine shop install hardened valve seats. Then, you can use all of the unleaded you want. The reason for this is that in the pre-unleaded days, the lead in gas served as a lubrication for the valve seats. When the wonderful EPA banned leaded gas, the lead-lubricant was gone. The car makers compensated for this by hardening the valve seats, making lead uneccasary. However, using unleaded in cars bult before about 1974 or so will result in fried valves/ valve job. I'm told that the notoriously bad valve life in old Volkswagon beetles was a direct result of unleaded gas being run in these engines.


What if i used regular gas instead of premium?

This all depends on the compression of your cars pistons, If you have anything over 10 and you opt. for regular Unleaded you might get pre-ignition in your cylinders which will cause a "PINGING" or "KNOCKING" sound usually high-end cars call for higher octane gas. So unless your car calls for premium fuel stick to regular and save a few bucks.


Shall we use unleaded gas instead of leaded gas?

Well, I am not sure where you can even get leaded fuel anymore, BUT even NASCAR went unleaded. the onl reason we used lead was to stop PRE IGN. and with technology of todays additives, they have done that as well with out lead. So YES unleaded is prefered in my thinking. Where are you able to get leaded fuel? in the USA? or are you in another country?


What are the ratings and certificates for Pre retirement - 1970 TV?

Pre retirement - 1970 TV is rated/received certificates of: Belgium:KT


What kind of gas is best for a 1994 camaro z28?

The V8 requires Unleaded premium (91 octane). Do not use any octane fuel below this or you may end up with engine damage from pre-detonation.


Where can I investigate pre owned cars?

Carfax is a great service that gives you an honest report on pre-owned cars and their conditions. Also dealerships may be able to give you a history of pre-owned cars that you are interested in.


What does pre 1970's mean?

It means just before the 1970's.


Are pre-owned cars the same as used cars?

"Pre owned cars are typically resold with the benefits of buying a new car, while only paying the price tag of a used car. Alot of times Pre-Owned cars are resold as Certified, and can be bought with a warranty."


How does the resale value of pre-owned cars compare to that of new cars?

Pre-owned cars value less because they were onced owned by someone as new cars have never been driven or leased by someone.


What does pre owned stand for when buying a car?

Pre-owned cars are cars that have been owned by someone else and are not new, also known as used cars. Many dealers may "certify" pre-owned cars, which guarantees that the dealer has inspected and repaired the car and certifies that it is in good condition.


Which websites sell reliable pre owned cars?

Well, I would recommend purchasing pre-owned cars from Cars Direct because they offer a variety of vehicles for an incredibly reasonable price towards customers.