Shell Helix Ultra 5w40 oil - 4 litres for £9.99 at Home Bargains, got mine from Alfreton in Derbyshire. Looking at e bay that seems a good buy

that what my tintop uses...
£ 40ish in Shell garages.

Non in my Local one , Burnley, must be a local thing.

In mine as well, kidsgrove stoke on trent