Date: Thu, 25 Nov 1999 13:20:42 -0800 From: Johannes Andersen <johannes.andersennopsamel.ac.uk> Subject: Re: Saab 9000i 16v 1988 auto MPG.
Since you are doing 32 on motorways, the engine must be OK. If you are doing short journeys around town, I recommend using a syntetic low grade (cold) oil if possible. The problem is that these new oils (even 0/40w) were not around when the car was designed, so it is an open question if this is permissible. From my understanding of the grade figures - they refer to a multigrade specification. But few people remember single grade oils. Hence 0/40W means the the oil is thinner than a 0-grade oil when cold, but thicker than a 40 grade oil when warm. If this is true, then there should be no obstacle in using such an oil ? I welcome any illumination of this subject. /Johannes BrianG wrote: > > Hi all > > Can anyone tell me what fuel economy I should be getting from this car. > > I am in the UK. All following figures are in MPG(Imperial) as opposed to the > american gallon. > > It has had a new engine (38000miles on it) full service, but still returns > only 18mpg around town and 32 on motorways. The local garage reckons it is > running ok but I had a 4.2 jag that did 16mpg around town so think something > is seriousley wrong. > > Brian G
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