Ford Mustang Forum banner

Help Please!

1535 Views 13 Replies 13 Participants Last post by  Gig4Fun
Ok HERES THE DEAL just got my car about a week ago....had about 63 miles when i got it, and now has about 480. Ok my mpg is 12.1. Im finding most of the GT owners around here getting at least 14 mpg. I was thinking it was my tires. I checked and their psi was about 30-32....:?: SO i went to my local gas station and pumped them up to about 40 infront and 39 in back. Is this good..or should i lower the psi alittle? Could that of been my MPG issue???? thankyou!!:wavey
1 - 1 of 14 Posts
psi on tires or is it octane

Baginoman,
PSI settings for the stock tires are printed on the sticker on the inside of the door... if you have stock 17" I think it's 32 all around... double check with the sticker.
Quick question:
What octane fuel are you running? - reason I ask is I saw a guy over at Edmunds forum who was running 93 octane (no aftermarket tune) and was getting like 10-12mpg. I told him to switch back to 87 and see what happens.
Quick comment:
My 06 owners manual say during first 1000 mile break in do not expect to get a good or constant MPG.
See less See more
1 - 1 of 14 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top