PTKRUZN,
I have a 2005 pt non-turbo. I install a Tornado in the air intake about a month ago. I just got done filling up yesterday and for non-highway, I got 27.4. I have 15,000 miles on it and just changed the oil to Castro Synthetic 10-40. I have a friend who is using synthetic and he said he lost 2 mpg by changing. Our PT club did take a short cruise a couple of weeks ago and did some highway driving, but most was at speeds of 50 mph, for the last hundred miles or more, I ran on the freeway and up some pretty good hills at about 78 mph and when I filled up I got 29.6 mpg. Sound like you have something wrong. If you want to print this out go ahead and have the dealer contact me.
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