10 or 40

Folks I suspect my car hasn't been serviced as it should have been from the private trader I bought from. Just checked the air filters and both seem old..oil also seems a little dark for something only 100 miles old so I'm going to oil change myself. 82k on the clock so which oil would you...

Hello all, I had the old girl serviced 2000 miles ago and today the oil level warning light comes on? I pulled up outside a local bp and looked at the dipsick! She was way below the bottem of mimimum? I ended up putting around 2 litres back in to bring her up to max. Any idea why shes used so...