Hi, i'm thinking of getting the oil changed on my focus. Local dealer asking £68 for this. I see national tyres do castrol gtx 5w-30 for £28 all in. Has anyone had any oil changes with them. Could you give me advice on this. many thanks jason

National tyres are ok doing oil changes mate. Pretty much anywhere will be though, its not difficult to do. As long as they use 5W30 semi or fully synthetic oil you'll be fine.

After I got 2 X 185/60 R 14 Continental eco 3s from "tyre shopper" website, fitted by National Tyres, (but paid to site via Mastercard), I got National Tyres to do an oil-change on My Son's SEAT 1.2L 3-pot engine, for £36, using fully synth 5W30 Castrol Edge, and a proper SEAT oil filter, paid by me using Mastercard to National Tyres, Aberdeen, with me 200 miles away. An excellent service. (Kwik-Fit had quoted £45 for the oil & filter, using Mobil 1 5W30).

buy a haynes manual, correct grade of oil and the correct filter, do it yourself m8.
your admitting defeat if u take ur car to a garage