Redfab

Andrew Davison of North East Auto Tech is very good if your close to there https://www.northeastautotech.com/

Your engine is CAYC. How long have you had the car? Do you know if it has had the software update? If it has, the regens of the DPF are more frequent. Id say every 100 miles or so rather than every 300-350 miles. Im sure there will be loads of threads on this. By the time your DPF light has came on, your car has already tried to regenerate a few times and failed. (software updated or not) and is telling you to take it for a run. During every attempted regen, extra fuel is injected into the engine. If this sequence is interrupted (when you turn the engine off & the regen fails) that fuel is left in the engine and leaks down past the pistons and enters your oil. Hence the possible extra oil when you withdraw it. It is said that when using an oil pump, not all oil is withdrawn and a little is left in the bottom. Dont forget to change the filter and get that little extra from where the oil filter goes during oil changes. I see it was your first oil change yourself using an oil pump. Well done 👍 It took me a while, but for the last 17 years now i have been doing these myself on a variety of cars with an oil pump/extractor. As Warrior 193 says, use the amount going back in as a rough guide only. You may as people say, have a little which cant be removed. Thats fine. Fill to the top level on the dipstick then start the engine for a bit, let it run through, only around 20 seconds or so, then leave it and check it again after around 30mins. Top up to the max again as necessary. Enjoy your car, its a cracking engine if looked after correctly.