With gas prices headed for the $3 mark for the summer, what's the lowest recommended octane rating for 289/351W engines? I know... the lowest I can use without knock, but would like to know what is actually recommended. Thanks. Hey! Spikey Likes IT!
1965 Ford Mustang fastback 2+2 A Code 289 C4 Trac-Lok Vintage Burgundy w/Black Standard Interior Vintage 40 Wheels 16X8" w/BF Goodrich Comp T/A Radial 225/50ZR16- posted
19 years ago