lollysmum ,
I'll give you a couple of examples. I am sure one can find better options, but I guess mine are not too bad as well.
Screenwash: LIDL -- 5L winter concentrate and a small bottle of summer concentrate (better than usual stuff!); GSF/Halfords/Tesco/etc. -- roughly the same average stuff. So called "ready to use" screenwash is more expensive per litre than a concentrate.
Engine oil. You'll need 5L. It is safe to use any Mercedes MB229.3 and MB229.5 oil, the latter being of better quality. Avoid MB229.31 and MB229.51, these are not as good for short journeys (cold engine). The trouble is that some oils are sold in 4L bottles. These are the examples:
The best:
https://www.opieoils.co.uk/c-721-2295.aspxI would pick Motul 8100 X-max 5W-30 (£34 -- excellent option for you) or Mobil 1 0w40 from this lot. Mobil is also sold in Tesco. Castrol Edge is OK, but overpriced and sold in small bottles.
Add here Shell Helix Ultra 5w40 or 0w30 available from Shell petrol stations and on the web (overpriced).
The second tier:
https://www.opieoils.co.uk/c-719-2293.aspxI would range them as: Motul 8100 X- lite 0W-30 (high performance -- expensive), Fuchs TITAN SUPERSYN SAE 0W-30 (4L !), Motul 8100 X-cess 5W-40 (£30 -- good for your conditions of use), the others, avoid 10w40. Fuchs is also available from GSF (locate the outlets on their web site or order from it).
The third tier: any ACEA A3 5w30 or 5w40 oil, from Halfords the cheapest Halfords brand is £35.
The last tier: any ACEA A3 10w40 (this is what the dealers use), but you will not be doing favours to your engine...
Wipers.
Rear wiper is easy to refill. Get a standard Bosch (must be Bosch!) wiper from GSF, remove the rubber part, cut off the suitable length and use it as a refill. A £3 20'' standard wiper gives you two refills. The wiper from dealers costs more than £20, if I am not mistaken.
Your front wipers are different from mine -- search for wiper blades in Google or ask people in the Parts section.
lollysmum wrote:OK thanks for the advice. Where's the best place to buy them?