Ive been running a 147 1.6 ts for a while now, its great, love it. But like most ts's it uses alot of oil. Im running on high quality (high spec) 10w 40 Semi synthetic oil at the minute. My dad runs an Astra with the 2.2 ecotec (same as Alfas 2.2 in the 159's if Im not mistaken?), hes changed from semi synthetic to fully synthetic and his oil consumption has halfed! So, Can the TS engines run on fully synthetic? Would it be worth trying?