Re: Do you use 87 or 89 octane?
I went for a long trip and put in 91....no improved mileage over 89.
I started my car running at 87 and when I switched to 89 better mileage which equaled the increased cost of 36 cents a gallon.
The moral of the storey of the doc, is don't put in more than your car reccomends.
Thanks for specifying DrivenDaily, I meant to because I did to the test with nil results.
2012 LT Platinum with Performance Package(V6), Crystal Red Tintcoat
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Farewell to 2011 2LT v6 Black Granite Meteallic