Date: Wed, 18 Aug 1999 13:44:24 -0400 From: Scott FitzGerald <Scott.FitzGeraldnopsamc.ca> Subject: Re: New Bosch Platinum Spark Plugs
Wow - that's absolutely horrible gas mileage. You'd have to be a real leadfoot for it to be that bad. Are you calculating that yourself or just taking the reading off the SID (in dash computer)? The SID won't necessarily be accurate; it depends on your driving characteristics. You can drive with the cruise on at 105km/h for 3 hours, then floor it to 150 for 5 minutes and your mileage will suck. I would expect you to get between 8 and 10 litres/100km overall. I'm consistenly in the low 8s (low 30mpg's) and I'm a leadfoot with a 1994 V6 in Ottawa. I've also had very bad luck using non-spec spark plugs. They really threw off the engine management and I would get chugging at high speed. Once I put in original spec plugs, no problems. As well, don't get them from the dealer, you'll save half by going to an auto supply place. Check the owners manual for model numbers. Cheers, Scott. Michael Gabriel wrote: > > Folks, > > Please excuse my naïveté, but has anyone heard of, or better yet, tried > the new Bosch platinum plugs with the 4 electrodes? Would that > significantly increase performance or just cost of maintenance. Does > Saab insist on use of their own recommended or even "proprietary" plugs > (<grin>) without which the car won't run properly? > > I have a 1999 9-3 2.0 liter 185Hp turbo and I just wanted to improve the > performance and the gas mileage(!!!). I'm far from a tame driver, but a > mix of mostly (dreadful) city and some highway driving (say 70/30) in > Montreal gives me fuel consumption of around 14.6 litres/100 Km which is > far greater than EPA ratings and much worse than what some of you have > mentioned. If it's just my lead foot and aggressive driving style, well, > I can tone that down, but if there's a problem or something I can do to > improve the "health" of my beloved Saab, I'd be very grateful to learn. > > TIA, > > Michael
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