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Old 06-18-2010, 06:19 PM   #11 (permalink)
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thanks for the info on the grill blocks. I've been using a obd data logger program, and one thing i found is that my temp gauge on the dash stays at 190 degrees, even though the obdii says the coolant temp is anywhere from 170-200 degrees.

i secured the fiberglass material to the existing louvers with screws.

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Old 02-27-2011, 03:04 PM   #12 (permalink)
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I took the jetta on a road trip from michigan to florida. The weather here has been in the 80's every day. Back home, they have accumulated nearly 20 inches of snow during the 10 days we have been gone.

Here are my fuel mileage numbers: Mk4 jetta 99.5 225k miles, Ipike snow tires over inflated by 10% (at 50 degrees F) Myself, my wife, our 7 month old daughter, and a car full of luggage. (babies and wives need A LOT of stuff!)

first tank of fuel: 55.0 mpg driving under 70 mph with winter diesel. 826 miles when the fuel light came on. Still had about 1.5 gallons left in the tank as i put in only 15 gallons. (ventectomy!) I don't often run my car below 1/4 of a tank and did not realize how much fuel i had left. I could have easily joined the 900 mile club!


2nd tank of fuel: 48.9 mpg driving between 75-80 mph with A/C on. Only 725 miles when fuel light came on.


3rd tank: over 2K miles of driving so far, and have yet to fill up a 3rd time...but mileage is pretty crappy this tank. Spend 6 hours stuck in traffic coming back from the space shuttle launch with the a/c on high.



I wish i had the patience to drive under 70 mph on the way home with a full tank of summer diesel, but i think i am going to be in too much of a hurry. It's about 1,400 miles from here to home.
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Old 03-08-2014, 09:49 PM   #13 (permalink)
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Now she is just shy of 280k miles. Still getting 50 mpg in the warm months without really trying.

I am contemplating running a test in the spring when its a bit warmer. My power steering doesn't work, so I'm contemplating commuting for an entire tank of fuel without a serpentine belt.

I wouldn't have a/c or an alternator. I'm just curious what kind of mpg gain i would see. I drive about 40 minutes to work and wonder if the battery will have enough capacity to power the fuel pump and other electrics during that time. I will use both the block heater and battery charger when parked. I don't want to risk stalling because I ran out of battery power.
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Old 03-17-2014, 08:59 PM   #14 (permalink)
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The Bat Mobile - '05 Mazda Rx-8 Grand Touring
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With no alternator your car will drain the battery pretty fast. As the voltage in the battery drops, every piece of electronics will be affected including your ECU! You will lose performance and economy, you have to drive the alternator at the very lease.

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