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Re: Proper fuel for 1.5L engine Posted by Scott Paterson [Email] (#13) [Profile/Gallery] (more from Scott Paterson) on Thu, 22 Jun 2023 14:38:32 In Reply to: Proper fuel for 1.5L engine, blacksheep [Profile/Gallery] , Sun, 18 Jun 2023 08:27:19 Members do not see ads below this line. - Help Keep This Site Online - Signup |
This was sent to me to post on this topic:
The basic answer is, Premium is still Premium. However, the longer answer involves the evolution of ICE design, particularly with regards to CR, the removal of lead additives, and the ongoing reformulation of fuel hydrocarbon mixtures, specifically the reduction of carcinogenic aromatics such as benzene and the introduction of ethanol as a fuel additive, resulting in the introduction of a new rating regime, AKI (Anti-Knock Index) with its subsequent lower octane ratings. Seems to me that most people are unlikely to care that much.
https://www.petro-online.com/article/analytical-instrumentation/11/koehler-instrument-company/i-hear-you-knocking-automotive-knock-and-the-octane-number/2813
_______________________________________ Saabnet.com Webmaster Saabs Owned: 1973 Saab Sonett III (Current) 1983 Saab 900 Turbo 1985 Saab 900 Sedan 1990 Saab 900 1992 Saab 900S 1999 Saab 9-3 Turbo 2005 Saab 9-2X Aero (RIP 95K/Accident-guy ran stop sign) 2005 Saab 9-2X Aero (Current) 2007 Saab 9-3 SportCombi 2010 Saab 9-3X Wagon Winner 1996 Saab Owners Convention Rally Novice Class Winner 1999 Saab Owners Convention Rally (All Classes) Also Founder of two non-profits: Poverty2Prosperity.org RunClubMenloPark.org
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