Dr Farco Posted February 28, 2004 Share Posted February 28, 2004 Regarding Phase one engines, I swore I read that the early ones required premium fuel. Did a search and couldn't find anything. If this is true, when was the change to the lower octane made? Dr. F:confused: Link to comment Share on other sites More sharing options...
SevenSisters Posted February 28, 2004 Share Posted February 28, 2004 The H6 SVX required 91 octane. Sorry but I don't recall any 4's needing the extra juice but I'm not positive about this. Link to comment Share on other sites More sharing options...
Commuter Posted February 28, 2004 Share Posted February 28, 2004 The 96 2.5L engine was 155 hp and needed premium. They made changes in 97, upped the hp to 165 and it runs on regular fuel. Commuter Link to comment Share on other sites More sharing options...
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