▲ 6 r/fbody
Have been running 87 in my 98 Z28 for the past 4 years how screwed am I
Like the title says I’ve always ran 87 and have recently learned 91 and up is recommended, you guys think I’ve done permanent damage? Have probably put about 30-40k miles on it in that time
u/YUNG-SLUDG3 — 7 days ago