Quote:
Originally Posted by Flavor 987S
Should be "0".
Running race gas, even unleaded, will show trace amounts of lead, in your UOA.
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Zero (0) is impossible. Despite the belief that unleaded contains no lead, there is an unknown government regulation allows unleaded gas to contain lead to be added intentionally to gasoline, but does permit unleaded gasoline for motor vehicles to contain up to .05 grams of lead per gallon.