anyone used mannol oil, ive been using it for a while now and seems very good quailty. 5 litres of 5w30 fully synthetic less than £20. i read reviews on the company before buying this oil Lithuanian plant and headquarters in Germany. many people have the same views the product is as good as much more expensive premium brands. youtube have videos of this product going through various tests with good results, was previously using brands such as castrol shell and comma, oddly enough seen the comma oil plant video and mobil 1 was coming off a separate line and boxed for dispatching. i put mannol 5w30 fully synthetic in my astra in november and i done a 200 mile round trip the weekend oil level still on max no top up since oil change 3 months ago.