Know this Unleaded Heads

We revisit the question of unleaded fuel and classic cylinder heads.

Classic Ford

It seems a long time ago that the green-handled pumps first started appearing at filling stations in the UK, accompanied by big charts in garages across the country denoting which cars could and couldn’t use the new eco-friendly fuel without modification. Back in the late 1980s, there were still plenty of cars in daily use which were old enough to have been built before green issues and lead in fuel became an issue but these days any cars not capable of running on unleaded are largely classics. Now, as then there are various options open to you: you can use an additive or go the whole hog and have the car converted to run on unleaded fuel. To explain the subject properly it’s first necessary to revisit the theory behind…

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Classic Ford (Digital) - 1 Issue, Spring 2025

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