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10.5 litres .....I thought that the CRD engine took 9.5 litres to top of dipstick. Since I've had the car (bought in Feb 2020), I've done two oil changes & both times have got 9.5 litres out & replaced it with 9.5 litres. I know some cars do have a factory fill that can be half a litre to a litre more than the service fill. So to get 10.5 litres out can only mean that there was a litre too much in there, or you managed to suck the engine bone dry It's a good thing though, that we can put in exactly what comes out....means it's not leaking or burning oil. This car is one of few diesels I have owned that never uses any engine oil & never needs any top ups between changes. The only other diesel that I ever owned that never needed oil top ups was my old Saab 2.2 TiD. The one thing that does worry me about sucking the oil out from the dipstick tube is, does it suck out sludge ? Sludge is kind of a thing of past when you used to drain old Ford Cortina engines & it used to come out when you drained the sump....there was no way that poo could ever be pulled out a filler tube 'cos it was way too thick. I wonder how much sludge we have in these sumps ?. Unless you pull the sump off, you will never know, but the only way to get most of it out is to remove the sump plug. Sump plugs have been fitted by every car manufacturer for draining oil since the year dot & that is the proper way to drain oil. If there was a better way, then car manufacturers would have have invented it. Tinpot amateur inventors & idiot youtubers who think they know better are just trying to endorse a product that doesn't actually work properly because they are probably being paid to do so.