Cheers Andy but gonna go for the Renault one Mario has. I Looked on ebay for r4 cap but did not find one. I guess most Renaults 14, 16 5 etc fit.
Hi R well i saved nearly 6 quid in fuel cost with my wife's 10p off per litre and the lower price so now only out of pocket by about 8-10 quid, Bargain.
G