codo1488

Hi All, I have just joined the forum, having just bought a 1988 xjs 3.6 coupe. its a bit tatty and hasnt moved in a few years, i am collecting it next week. Its Not my first classic car but certainly my first Jaguar. I have twio quick questions, id appreciate some advice on please, 1. Considering the XJS went into production in 1975 do they have metric or imperial fittings? 2. Does the engine require a lead additive in the petrol ? Thank you.