Question about Oil

[Strangways]

I haven't needed to put any oil in a car for years. I only do about 5000 miles a year in each of them so I very rarely check nowadays. Even when I was out on the road doing up to 40,000 miles a year it was a very rare occasion that I needed to top up the oil. Even my old 1991 MX5 with 63,000 miles on the clock never used a drop between services. What is it with new engines that causes them to drink oil?

[Deleted User 1027]

Mine was halfway between min and max after 6000 miles and first service not due until end of November so I wanted to top it up. My previous Mazda 2 and the wife's MX5 didn't use oil
I believe Audi's drink oil for fun.

[Dogfuzz]

When I keyed in my reg and details on the Halfords site( 2018-Sport Nv 1998-petrol)-one of the options was Halfords 5W30 fully synthetic....is this ok to use please or is the CastrolMagnetec better because it is more expensive? --thanks.
I just like to have a little of the stuff to hand if a mini top up is needed prior to a longer journey etc!....