The HDi has a locking fuel cap. It has a separate key as the previous owner apparently left the original at the petrol station.

Now, I presume it's an aftermarket pattern locking cap as quite frankly it's s**te and fiddly to use.

Are ph2 cap threads different? I would rather just change it for a non locking one if possible for less embarrassment at the petrol pump faffing trying to get it back on. Granted its a rare visit as it's done 598 miles so far with a shade under a quarter of a tank left. Champion.

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Senior Test Automation Engineer for the 306GTi6 Owners Club Forum

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But if it has screw threads on it any screw on cap should fit.

Aftermarket for sure, whip it off and lob on a normal one.
Did the same on the last DT I had.

What year is it? As only really late cars have them (2001 on IIRC)

Check for threads once you remove the cap.

Two tabs that lock inside the opening where the nozzle goes in.

Push the cap in and twist the key, the one like yours I had could be undone without a key anyway.

I'l source an old cap and hope for the best then

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Senior Test Automation Engineer for the 306GTi6 Owners Club Forum

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