Hi, i'm probably being dense (i'm an auto electrician, not a mechanic lol) but I knew my Marea 20v was burning a little oil but I put a stainless exhaust system on the car from the cat back and when I boot it you can really see the smoke bellowing from the back now (the original exhaust pointed to the ground, so the fumes were not visible in the car). It's a 1998 Marea 2.0 20v, not sure if its a 147 or a 155, yet to find that out. Any pointers on how to find that out too?