Re: gas milage down - '90 SPG - Saab 900 Bulletin Board - Saabnet.com
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According to Chevron, oxygenation only gives a 2-3% mileage hit. See-
http://www.chevron.com/prodserv/fuels/gas_qanda/oxygen.shtml
Reformulated gas doesn't help, but I doubt it'll produce such a big drop.
How do the spark plugs look? If you're running somewhat rich, you won't see a performace loss - in fact, it may perform a little better. But your gas mileage would drop. Not until you start running very rich, you won't get a performance hit.
The plugs will tell you if you're running rich. That could be due to a FPR that is starting to leak, a sticky fuel injector (only one plug looking rich). Beyond that, there are a few things that can mess up mileage, like engine temp sensor and the like. But start with the plugs.
posted by 192.249....
Posts in this Thread:
- gas milage down - '90 SPG, johnf, Thu, 10 Mar 2005 09:05:46
- Along with all the other comments,, Dick in Falls Church, Thu, 10 Mar 2005 21:00:39
- Re: gas milage down - '90 SPG, Ari , Thu, 10 Mar 2005 10:49:25 <-- Viewing This Message
- I wouldn't beleive Chevron, Russell Giuliano, Thu, 10 Mar 2005 12:22:21
- I agree with about not believing Chevron, JDSaab, Thu, 10 Mar 2005 13:46:48
- Agree, but, Ari , Thu, 10 Mar 2005 13:11:47
- Re: I wouldn't believe Chevron, RayF, Thu, 10 Mar 2005 12:47:38
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