I've been looking at Liqui Moly Synthoil Race Tech GT1 10W-60 as an alternate to Castrol TWS 10w-60 for my next oil change. When looking at the filling capacity (see attached pic), 8.8 litres plus 0.4 litres if you are changing the filter.
Then no wonder we get the add 1 ltre warning soon after an oil change when we have filled only 8.8 with the filter. You will see in my previous post that I filled with 9 litres and it was still way below the max. So it won't hurt to fill with 9.2 litres when changing oil with the filter.
2007 E92 6MT - Silverstone II with /// Performance Exhaust with ACM Test Pipes and BPM Sport Stage II Dev-Tune - Proper engine warm up, 12-monthly oil change, Castrol TWS 10w-60
2014 F15 X5 3.0d