Ford Mustang Forum - View Single Post - What octane are you using in the GT?
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post #15 of (permalink) Old 06-25-2010
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5.0L Member
mustang6767c's Avatar
Joined: Jul 2005
Location: Orange County
Posts: 117
Does anyone run 87 consistently? I will eventually run 91 but with my current drive 87 is sometimes a better choice.

Even though Ford claims you can run 87, does anyone believe it may cause engine damage?

By the way I'm purchasing a 2011 5.0 MT with 3.73

2013 GHIG Boss 302: Recaros, Torsen. Whiteline rear control arms, Barton shifter w/ two post bracket, Ford Racing Stinger mufflers (swapping soon), more to come.

SOLD!Natasha- Performance White 2011 Mustang 5.0 Premium: MT, 401a with Cashmere Stripe, Comfort Package, 18" Polished Wheels.

Natalie- Wimbledon White 1967 Mustang coupe, 289 2bbl, Red Interior, 16x8 torque thrust II's, Custom Exhaust with Doug's Headers, MSD 6a Electronic Ignition, Grant Steering Wheel.

Last edited by mustang6767c; 06-25-2010 at 02:51 AM. Reason: By the way I'm purchasing a 2011 5.0
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