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Salesman was wrong.....
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Posted by MI-Roger [Email] (#882) [Profile/Gallery] (more from MI-Roger) on Wed, 29 Aug 2007 05:32:18 Share Post by Email
In Reply to: Gas...prem vs. reg, tk505, Tue, 28 Aug 2007 20:06:09
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If he had worded it just the opposite, ..."use only premium as regular will do more harm than good"... he still would have been wrong, but the engines do prefer higher octane.

I have two Saabs, a 2000 9-5 and a 2006 9-3SC, and buy mid-grade (i.e. 89 octane) for both vehicles for most of the year. My 9-5 prefers premium in the summer months, specifically when the temp is 86 degrees F or higher, as the performance difference is noticeable. I also buy premium when traveling through the noumtains regardless of outside temperature - there is nothing as great as a turbo motor when taking mountain twisties at 80 MPH plus!

The engine computers will adapt to the octane level of the fuel you buy, but I recommend 89 octane or higher. In fact, I believe the owner's manual specifies 90 octane or higher.

posted by 198.208.25... 
_______________________________________
Saabs owned:
2008 9-5 Aero Sedan, sold at 227K miles
2006 9-3SC 2.0T - Wife's daily driver
2000 Viggen Convertible - Sold May, 2022
1964 Quantum IV Formula Car - Retirement project
2000 9-5lpt Sedan, sold at 318K miles
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