synthetic oil ?
#11
10-29-2008 | 07:32 AM
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#12
10-29-2008 | 08:08 AM
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[QUOTE=ramhunter1;1441330]The plug change is not hard, just more time consuming than a normal 8 plug change. I used the standard replacement plug and have had no problems. Some people have tried platinum plugs with mixed results.
#13
10-29-2008 | 02:35 PM
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[QUOTE=Off_Road_Teacher;1441337]any other recomended plugs???
#14
10-29-2008 | 05:21 PM
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From: South Georgia/East Florida
#15
10-30-2008 | 12:34 PM
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I have the 4.7, regretfully I had to switch back to conventional, I was using the Mobil1 full syn and lost 2-3 mpg in the city and a steady 3 on the highway. I tried three different times with the same results. I'm sticking with the Valvoline I'm running now. I'm back up to 18-19 mpg in the city and 23-25 hwy.
That's hard to believe! however, my mileage in my '08 5.7L did seem better and then all the sudden got worse. I changed my oil to synthetic my first oil change at 830miles. I was getting 13 all day in city even jumpin on the gas often. Now I have 1900miles and only get 11.5-12 going easy in the city. It's always said that synthetic yileds better mileage because it's lubricity or whatever you call it. I know it's way to early to start even getting used to a certain MPG because it's premature stage for break-in period, but Man you got me thinkin lincoln...haha
#16
10-30-2008 | 03:03 PM
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I Have a 4.7 I use Iridium plugs. (NGK) bought them at advanced auto. Used platinum but I really think my MPG went down after installing them, so I went to Iridium.
Man thats some good MPG for a 4.7L.
I think I used to get 15.1 in the city 22/23 in the highway at approx. 65MPH which I no longer do.
Man thats some good MPG for a 4.7L.
I think I used to get 15.1 in the city 22/23 in the highway at approx. 65MPH which I no longer do.
#17
10-31-2008 | 05:26 PM
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From: Dyersburg, Tn
#19
11-01-2008 | 12:39 AM
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That's hard to believe! however, my mileage in my '08 5.7L did seem better and then all the sudden got worse. I changed my oil to synthetic my first oil change at 830miles. I was getting 13 all day in city even jumpin on the gas often. Now I have 1900miles and only get 11.5-12 going easy in the city. It's always said that synthetic yileds better mileage because it's lubricity or whatever you call it. I know it's way to early to start even getting used to a certain MPG because it's premature stage for break-in period, but Man you got me thinkin lincoln...haha
Winter blends of fuel usually get worse mileage is why it suddenly dropped!!
#20
11-02-2008 | 01:33 AM
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From:
I will only use synthetic oil. Mobil 1 is my choice. My Ram gets 5W-20, my Grand Cherokee, and Wrangler get 10W-30. My Mustang (over 225,000 miles) gets either Valvoline Dura-Blend or Castrol Syntec-Blend semi-synthetics. They ALL get WIX filters!
My Grand Caravan is a company vehicle so it gets whatever the dealer puts in.
My Grand Caravan is a company vehicle so it gets whatever the dealer puts in.
