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Infiniti M35/M45 Real World MPG

91 messages,  Last post on Nov 27, 2009 at 4:41 AM

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What is this discussion about? Infiniti M35, Infiniti M45, Fuel System, Sedan

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#88 of 91 Re: POOR MPG [infinitim35] by nolic Aug 06, 2009 (8:25 am)
Replying to: infinitim35 (Aug 05, 2009 11:01 am) Inflated tire pressure to 34 PSI on my 2008 M35 increased my average MPG (combine) to about 18 - 19 and I also used Mobil 1 synthetic oil (5W30).
#89 of 91 Re: POOR MPG [infinitim35] by shmang Aug 06, 2009 (12:04 pm)
Replying to: infinitim35 (Aug 05, 2009 6:09 pm) Isn't it when you get mobil 1 you don't have to change the oil as frequently? Thats what the mobil 1 extended performance claims to do?   That is correct. But, with your driving style, I would change oil more frequently, since short trips are hard on the engine. So, with regular oil, I would do it every 3000 miles and with Mobile 1, you can extend it to about 7500 miles, but, still, I would NOT go way pass 6 month (7-8 month might be OK) though.   Yes, inflate the tire to 34 PSI will provide improved MPG - with some sacrifice of riding quality, not by much though. Replies to this message: carlosc52 (Aug 07, 2009 11:35 am)
#90 of 91 Re: POOR MPG [shmang] by carlosc52 Aug 07, 2009 (11:35 am)
Replying to: shmang (Aug 06, 2009 12:04 pm) I have owned an '06 M35 RWD since April '05 which currently has 82,500 miles on it. I live in South FL, commute 60 miles each way averaging 21.8 mpg running between 75-80 mph. My only complaint is the high RPM (3,000 80 MPH). Presume that the newer models with 7 sp tranny will help...
#91 of 91 Decent Fuel mileage: '09 M35 on a recent road trip: 23.8 MPG! by m4m Nov 27, 2009 (4:41 am)
Atlanta, GA to Orlando, FL: Trip Computer: 497 miles, Elapsed time: 7hr 19 min. for an average speed of: 75.3 MPH. Some luggage and about 1/2 way there and back A/C was on. LOTS of cops but they were all busy writing tickets. Still saw 90+ a couple times. Speed limits vary from 55 to 70 with probably 70% of the trip at 70mph.   So, overall MPG for this trip, with an average speed of about 75MPH, turned out to be 23.8 MPG on premium. And I blew the doors off an Audi A6 and a GS350. Probably dropped my average by 1!

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