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172 messages, Last post on Nov 19, 2009 at 12:09 PM
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I just bought a 2002 Ram 1500SLT Quad Cab with the 4.7. The first thing I was wondering is about fuel mileage. What is a real world mileage for a truck like that and what are some tips to get the best mileage possible. I have always owned Hondas, so I am a little ignorant. Also, I was wondering if it would be realistic for me to change the transmission, transfer case, and differential fluids and if I do any recommendations for what fluids to use. The truck only has 10500 miles on it, and I was thinking about putting synthetic oil in. Is it worth it?
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Replying to: jojo5150 (Jul 07, 2005 1:30 am) I use Mobil 1 0W-30 full synthetic motor oil, but in all honesty I think synthetics are hard to justify. Their biggest positive feature is viscosity stabilization, ie: high flow rates at a wider temperature range and longer duration. Unfortunately, synthetic oils collect dirt and moisture just like non-synthetics and should be changed because of it. I would not advocate 30, 20, or even 10,000 mile change intervals using synthetic motor oil. However, in the practical duration of the manufacturers recommended change interval, I would say that a synthetic is more reliable through 6-7500 miles. From a cost perspective alone synthetics are probably not justified. Best regards, Dusty |
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Replying to: br_brian (May 02, 2005 2:53 pm)
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Replying to: lotsofmiles (Jul 21, 2005 7:50 pm) Best regards, Dusty |
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| What is the best replacement air filter for this engine, a k/n or a standard paperfilter. Do the performance filters help that much on a stock truck? thanks | |
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Hello Everybody, I have a question, can anybody tell me where i can get info on changing spark plugs on my 2003 1500 quad cab with the 4.7 engine. I have 63k miles on it and was wondering if changing the plugs might help the terrible fuel mileage (14 mpg).Thanks in advance. gwp46
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Replying to: brnzbk (Jun 27, 2002 5:05 pm) Thanks...
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Replying to: hfeller (Aug 10, 2005 7:42 pm) Regards, Dusty |
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Replying to: gwp46 (Jul 23, 2005 9:18 pm) From what I can tell the 4.7 engine is pretty good on spark plugs. I've talked to folks that have gone more than 75K on the factory Champions. However, I've also talked to a few that thought their 4.7 was running pretty good - no noticeable skips or roughness - yet after a spark plug change said they noticed a difference in smoothness, performance, and fuel mileage. My personal belief is that most modern engines do seem to run fine when there's high mileage on the spark plugs. Newer designs have more powerful ignition coils and cleaner burning combustion chambers. But fuel quality and driving conditions can impact individual results. Even though I changed-out my factory Champion RC12MCC4s for Bosch 4418 Platinum+4s, supposedly a much longer lasting plug, I do not intend to try to take then to failure. Spark plugs are relatively inexpensive maintenance items, even the pricey platinums. This seems especially acute now that gasoline prices are $2.61 a gallon!. Best regards, Dusty
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I checked one of the Bosch 4418s in my 4.7 tonight. At 37K I was very surprised to see that the center electrode on number 1 cylinder was completely gone! The electrode had eroded down completely to the very tip of the electrode insulator. Now the Dak seems to be running fine, although I think I noticed a very slight lag on transmission kickdown in the last couple of months. I'm still averaging 16.78 MPG with more around town driving with the air conditioning on, the idle is good and there has been no other noticeable performance problems. I was hoping to change these out at 50K, just for a round number, but the loss of an electrode has me a little concerned. I'm also disappointed in the Bosch Platinum+4s at this mileage, although in all fairness the engine seems to be running fine. I may change them out just to see if there's a difference. I'll keep everyone posted. Bests, Dusty
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