Date: Sat, 24 Apr 2004 13:29:49 GMT From: hohnospamlid.invalid (Goran Larsson) Subject: Re: Saab and GM vectra
In article <408A3FF7.14005432nospamfitter.com>, Johannes H Andersen <johsnospamfitter.com> wrote: > I understand that the engine was made 10% lighter? I don't know the exact number, but yes, it was made lighter, have less oil in the oil pan, have lower friction piston rings, have lighter valves (reduced diameter on valve stems), etc. All with the goal of reduced fuel consumption. However, the lower friction piston rings increases the blowby gasses and stresses the crankcase ventilation system. The oil also gets poluted with the blowby gasses and as the total oil volume was reduced the life of the oil is also reduced. Damages to the engine is not unheard of after using non-synthetic oil, have a blocked crankcase ventilation system and delaying an oil change. -- G–ran Larsson http://www.nospam.se/saab/