91 octane premium!

[treynor]

Depending on where you live, there may be race gas sold nearby. A couple gallons of 100-octane unleaded mixed into your tank full of 91 will completely cure any pinging. That's the route I took...

 

[Mopar Steve]

Careful, Many octane boosters contain lead. If you are still running your car with the 'cats, this lead additive will trash them.

 

[MadMaxx]

There's no premium in Cali!?
Wow...
Regular is about 1.08 here and premium ranges from 1.15 to 1.25 near me. Race gas is also 104 and sells for 3.99 gallon (Suddenly owning a high-compression hemi isn't a good idea)

James

 

[2tall]

Well, we've got premium, but gas prices are about $1.66 per gallon. They were about $2.10/gallon last couple months...

Detroit, car and gas price capital of the world...