Needing some engine oil and reading the threads 15/40 or 20/50 seems to be the way to go This seemed good value ... £10.50 inc postage http://www.amazon.co.uk/Comma-MOT1G...?ie=UTF8&qid=1375721016&sr=8-1&keywords=20W50 or this if you fancy a pretty tin http://www.amazon.co.uk/Comma-CLA20505L-20W-Classic-Motor/dp/B002RPJ67E/ref=cm_cr_pr_sims_t
B&Q sell 20/50 oil for about the same price http://www.diy.com/nav/fix/motoring...Daytona-20W50-Motor-Oil-9217985?skuId=9227684