I just changed engine oil a few days ago , using eh Motul 8100 X-cess engine oil.
My feel is that my car is more responsive and more importantly it can stretch more mileage, from the usual 9 km per litre to 10.5 km per litre (same mobil petrol I am using). Same driving style and same usual route I am taking.
This is a good engine oil so far I have used. So far I have used Redline, Shell, Elf, Mobil.
More info can be read here below:-
http://www.motul.com/sg/en/news/products-innovation/new-x-cess-sae-5w40-for-the-toughest-demands