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Does 5-cyl WC engine run Unleaded fuel?

In message <UPMAIL13.199711012051180609@classic.msn.com> "Ian J Haseltine" writes:

> I asked this question when I was at an engine rebuilder a few months back,
> in my case it was a MB engine. The guy replied that Audi I5's have had
> hard valve seats since at least the late 70's and my engine would come
> to no harm. Whether it would actually run on lead-free was another question,
> and he recommended using an octane booster if using standard ul.

The MB is designed for lead-free petrol.  It says so in the microfiche.

(Unless the meaning of 'Bleifrei' has changed ...)

 Phil Payne
 Committee Member, UK Audi [ur-]quattro Owners Club