Seeing as you're in Essex, you might wanna take a leisurely B road drive to RPM in Ware, Hertfordshire. http://www.rpmmotorsport.co.uk/main.html
Their prices are cheaper than Opie Oils standard prices, I just picked up a litre of Silkolene for under a tenner and I think their 5 litre jugs are mid 30's prices.
Oilman is Guy from Opie - he sorts mine and they do have discounts for members. Not tried RMP so I can't comment on comparisons but Opie have the best customer service I've come across in the Auto trade.
LOL? Sacro...what? Oh, sacrilege :wink:
I'm not dissing Opie (I actually got a 5l off them for my first service), but if you're local enough and can just pop in and buy a litre for less than 10 and 5 litres for 35-36ish than I'd rather do that then get it through the mail.
That said if their 'special deals' can better that (not forgetting postage) than fair enough...of course there's always Halfords generic oil, think you can get 5 litres free if you buy floor mats from them :lol: or is it the other way around? :lol:
I bought some silkolene Pro S 5l the other day for £40 from opie including delivery. There pretty good if you put together a group buy, the people on the s2000 forum ended up getting 5l for £32 delivered !