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Re: leaded versus unleaded

> Having removed the cat from my car some months back due to the fact that
> it had completely disintegrated internally I now find myself wondering
> whether I can drive my car using 4-star leaded petrol, soon to be phased
> out, instead of the super unleaded I regularly use.
> Aside from the price difference of around 11pence per litre saving I
> will make, is there any benefit to be gained? Or is there a reason why I
> can't revert to leaded?

AFAIK, the lead used to lubricate the valves or some such.  It also
destroyed catalytics converters, so valves or the seats were
reengineered (hardened) to accomodate unleaded fuel.

I don't know if you will have problems with deposits or not.  

Here in the USA the leaded fuel pump nozzles are larger so you'd have to
modify the fule inlet hole to accomodate them.

Huw Powell


82 Audi Coupe; 85 Coupe GT