How would you know if a car is run low on oil
I have a 2003 2.0JTS Selespeed which I bought 10 months ago from a independent dealer. It had a full service history and had done 36K miles. From reading the forum (which is great and helped a lot in the negotiations), I got the dealer to pay 50% of the cost for AHM Motorsport to change the cambelts, balance belt and tensioners as I read about a lot of belts snapping. The dealer also paid for a service and new rear pads etc.
Car has been great and has now done 44K, in that time is has used about 5.5l of oil. This has slowed down to maybe 0.5l every 1,000 miles when I use Miller 10W60. If it is mainly motorway use, then this drops to almost no use at all.
It was owned by a retired guy before I bought it and I managed to speak to him (got his details off log book) about why he sold it. He said it was a bit "lively" for him and swapped to more relaxed car. He had bought it from new and had loads of options fitted, momo leather, xenon lights, factory Sat Nav etc.
The reason for the post, is that as it is now three years old and out of warranty I am wondering if there is any way to tell whether it has been ever run on low on oil (or can a check been done by a garage). From reading the posts it looks like it could be running fine and then one day without warning go "bang" because 20K miles ago it ran low on oil.
Car is fantastic, but just a little concerned about whether this may happen. If it helps I saw the car when the dealer had just got it and although the oil was black (been 11K since last Alfa dealer service) it was almost on the top mark on dipstick (another tip from this website to check oil levels when looking at cars)
Any thoughts ?
Edit: I have owned 4 x BMW 3 Series from new and 2 x BMW 5 Series and the Alfa is byfar the most fun and to be honest I can't really see any difference in the quality, which has surprised me given the reputation of Alfa in the press. I couldn't face another BMW as there are so many on the road.