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  #1  
Old 01-08-2008, 12:32 AM
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Off Topic Response

Quote:
Originally Posted by Hunter
I thought both engines required premium. Could I be using reg. or mid. grade in my 3.0?
Well, the premium being referred to is a price premium, not premium fuel.

To balance out AZNm's post:

The short answer: Yes

The technical answer: It will not hurt your engine. It MAY cause reduced power, and increased fuel consumption, depending on the actual fuel quality in your area, and your ambient conditions. The only way to know is to try it. If you notice any deterioration in power or fuel consumption, it is a pretty good bet that the ECM is retarding the timing to prevent predetonation; in that case, you should go back to premium fuel and get all the performance you paid for. I used mid-grade (89) for years with absolutely no adverse effects, but did notice a power drop on 87. That said, you won't save much in annual fuel costs, and many will slag you with analogies such as tinned food for athletes, don't buy a BMW if you can't afford the fuel, it isn't a Honda, etc.
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  #2  
Old 12-28-2007, 12:39 AM
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No regrets here! This is my second 07' X5 as my first was totaled. I immediately ordered another X5 3.0. I agree with jago that this vehicle is what it is and will be used by me accordingly. I did however lease my X5 for 2 years in the hopes that the diesel will be available by the conclusion of my lease.
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  #3  
Old 12-28-2007, 11:51 AM
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You are used to HP so not sure you would like the 3.0. I have an M5 and an M3 and I got the 4.8i. Glad I did. It is a heavy vehicle but moves quite nicely with the extra hp. Gas mileage, not much difference between the two to give up on the power. I also tow a boat so the 3.0 really wasn't feasible. You won't be unhappy with the 4.8i but you might be with the 3.0.
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Old 12-28-2007, 04:12 PM
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No regrets but yesterday I was on Hwy 50 on my way to Lake Tahoe and during a passsing situation and during the last climb up to the summit I felt underpowered. I did have 6 people in the car and it was packed full.

Is it true that the 3.0 uses 20% less gas than the 4.8?

Finally, I do not tow and have a 2 year lease and as mentioned here I was able to get a fully loaded 3.0 for what a less optioned 4.8 would have cost.
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Old 12-28-2007, 04:38 PM
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^ did you try DS mode? Shift the lever over to the left... it provides better acceleration since it plays with the gears/revs.
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Old 12-28-2007, 08:18 PM
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Quote:
Originally Posted by rh71
^ did you try DS mode? Shift the lever over to the left... it provides better acceleration since it plays with the gears/revs.
I have been "playing" with the DS shift. It makes a difference and makes the car even more fun to drive. I did not try it in the mountains but will in the return trip.
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  #7  
Old 12-28-2007, 10:41 PM
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I've had the 3.0 for one week now and so far I think it moves along great for a 5000 lb vehicle. No problems on the on ramps, hills and freeways.
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  #8  
Old 12-28-2007, 04:43 PM
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Quote:
Originally Posted by IamSMC
Sorry if its been asked already.....

Search doesn't seem to yield any results.....

Any members regret getting a 3.0i instead of a 4.8i?

Does your 3.0i satisfy your HP needs?
This is a very subjective question and strictly depends on your needs and desires.

I would highly suggest you test drive both. If cost isn't a factor then I would go with the 4.8. Based on your other cars, I gather your someone who likes performance cars?

The 4.8 still puts a smile on my face!
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Old 12-28-2007, 08:50 PM
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I test drove both before the purchase.....3.0 was underpowered, even the dealer warned me before test driving. Then I drove the 4.8 and ordered that same day. Like what 08WhtX5 said, "This is a very subjective question and strictly depends on your needs and desires. If cost isn't a factor then I would go with the 4.8."
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  #10  
Old 12-28-2007, 09:56 PM
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4.8i

IMHO, even the 4.8i will not give you the bang (its what i call it, the neck breaking acceleration) that is comparable to the M5. With 5 passangers merging onto a busy highway can get revvy very quickly with the 4.8i but really everyday driving 3.0 is just right.

I agree that it is subjective. Test drives don't do justice unless done a lot.

I trust that the 4.8 has enough power ( driving the 3.0 I thought i'd consider what if...) since it is the top of the line. just my 2 cents.

4.8 is fun but I would like more torque. Totally individually subjective.

p.s. Got my eye on that twin turbo engine on the X6...
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