[Subscribe to Daily Digest] |
Yes, more energy content in regular but you're forgetting that the ECU will retard the timing and do other things to avoid spark knock on the lower octane, resulting in an overall loss in efficiency.
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.