Always run 89 octane here too.

 

89 here, I buy it on base so it costs the same as regular off base.

 

93 rocks with the Diablo.

 

Use 89 when the price is lower and 87 when the price is high, funny don't notice a difference, just using 89 as much as possible since it is recommended...says you can use 87 but 89 recommended. No pinging yet knock on wood. Wait a sec okay now I can knock on wood LOL. Punish me, I am bad.

 

I have only been using 87 b/c I thought thats what it said to use, but I guess I will give 89 a try and see how that works out for me.

 

I use 87 around town and 89 when I head to the hills. I had a tank of 87 in the mountains and noticed a very slight ping and seemed just a tad sluggish. Didn't experience that with the 89. Can't tell any difference around town.

Always use 89 when towing.