1985-1998 [Subscribe to Daily Digest] |
[Main 9000 Bulletin Board | BBFAQ |
Prev by Date | Next by Date | Post Followup ]
Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
not much help Posted by TML [Email] (#2212) [Profile/Gallery] (more from TML) on Thu, 21 Jul 2005 08:35:02 In Reply to: Lower grade fuel = better running?, JohnCC, Thu, 21 Jul 2005 03:49:57 Members do not see ads below this line. - Help Keep This Site Online - Signup |
I can tell you that lower octane fuel does give better fuel economy. Some will argue that because they think more expensive (and higher number)means better. Higher octane simply means it resists pre-ignition, allowing the engine to extract more power without knocking. But higher octane fuel has lower energy per volume, so it gets consumed faster to create the same power.
What are the colour of the plugs? The cat. can probably mask problems, because it's purpose is to reduce emissions. The sootiness around the threads of the plugs is normal.
posted by 142.179.15...
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.