post #1 of Old 06-04-2014, 03:52 PM Thread Starter
brainfreeze
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Diesel vs V8- High cruising speed limits?

Looking at purchasing a new Overland soon. In Texas, we have some 85mph speed limit highways. Leaning toward the Diesel. My question is will the Diesel cruise at higher speeds as well as the V8 hemi? +85mph for hours.

Also, any V8 Hemi guys that wished they got the Diesel or visa versa?

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post #2 of Old 06-04-2014, 04:16 PM
rk1538
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cruising mine on 110 mph. feels nice.
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post #3 of Old 06-04-2014, 05:33 PM
Robert J. yates
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The diesel will run all day at 75-85mph with no issues. It will also pull down 25mpg plus at those speeds which is something the hemi can't do.

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post #4 of Old 06-04-2014, 08:44 PM
LibGrandCher
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V8 feels like you are sitting on a missile at 75 MPH.

The feedback in the cabin from the drive-train always puts a smile on my face.
Even passengers in the backseat comment on the sensation.
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post #5 of Old 06-04-2014, 09:51 PM
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I have not driven a hemi powered jeep but I have a diesel and it is so quiet at 75 all you hear is the wind and even that us pretty quiet. It also gets close to 30mpg at 75mph.


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post #6 of Old 06-04-2014, 10:08 PM
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They both cruise very nicely all day at 75-85. No work with cruise control. In fact the gas V6 will cruise nicely all day at 75-85. When manually controlled, it takes more work to maintain a V8's constant speed, where the tourque of a diesel smooths things out... Almost no need for cruise control. The difference is subjective and you need to test drive for yourself..

Otherwise the V8 will react quicker to the right foot, the diesel mileage will allow you to go much farther between stops. Pick your poison you should be happy with either as neither is a slouch.

2011 Grand Cherokee Overland V8, 2009 Liberty Rocky Mt V6, 2000 Grand Cherokee Laredo I6, 1979 CJ7 I6 Quadratrac
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post #7 of Old 06-05-2014, 07:00 AM Thread Starter
brainfreeze
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Thanks!
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post #8 of Old 06-05-2014, 11:07 AM
Barry45RPM
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So what is the drawback to a Diesel vs the Hemi (besides the initial cost)?
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post #9 of Old 06-05-2014, 11:38 AM
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Quote:
Originally Posted by ColdCase View Post
They both cruise very nicely all day at 75-85. No work with cruise control. In fact the gas V6 will cruise nicely all day at 75-85. When manually controlled, it takes more work to maintain a V8's constant speed, where the tourque of a diesel smooths things out... Almost no need for cruise control. The difference is subjective and you need to test drive for yourself..

Otherwise the V8 will react quicker to the right foot, the diesel mileage will allow you to go much farther between stops. Pick your poison you should be happy with either as neither is a slouch.
Cruise works fine at 80-85 with v6

I would think unless you are towing and are going to constantly drive at those speeds the v6 is the better option. Just my 2 cents.
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post #10 of Old 06-05-2014, 12:41 PM
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Drawback might be that you need to fill the DEF tank (8.5 gals) every 10K miles in normal driving. I have added only 2 gallons of DEF in over 4000 miles so if you drive highways you will not have to fill up much. The oil spec'ed for the diesel has only two approved choices a Mobil and Pennzoil product and it isn't cheap nor is the filter. 7 quarts at around 8-9 bucks a quart and filters between 30-40 bucks will run you around 100 if you do it yourself and the dealer charges a little more. Changes are every 10K or when EVIC tells you to change it.

Also you need diesel fuel which not all gas stations have but more are getting diesel pumps because of more diesels entering the market.

I get fantastic mileage on mine and have found the diesel Overland to be one of the best vehicles I have ever owned...
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post #11 of Old 06-05-2014, 01:12 PM
ColdCase
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Quote:
Originally Posted by Barry45RPM View Post
So what is the drawback to a Diesel vs the Hemi (besides the initial cost)?
There are quite a few threads on this subject. There are a lot of subjective and anecdotal opinions. They are both good vehicles. You should buy the one that fits your needs best. There is a sticky above that contains links to information.

The diesel will feel torquier, the V8 more responsive, but there is not much difference or a significant difference, depending on your point of view. If there are no issues, their cost of maintenance is in the same ball park. The diesel may be much more expensive to fix if anything should break... and you can easily destroy them by using the wrong/bad fuel or poor filters. But, on the other hand, they use much less fuel. Pick your poison.

Just about any shop can fix a V8, the diesel you are probably limited to a dealer until this engine gets more widespread. If you are going off road, there are quite a few more vulnerable hoses and wires hanging under a diesel vehicle than a gas model.

Outside of North America the diesel makes a lot of sense economically.

2011 Grand Cherokee Overland V8, 2009 Liberty Rocky Mt V6, 2000 Grand Cherokee Laredo I6, 1979 CJ7 I6 Quadratrac
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post #12 of Old 06-05-2014, 01:27 PM
LibGrandCher
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Quote:
Originally Posted by fun2drive View Post
Drawback might be that you need to fill the DEF tank (8.5 gals) every 10K miles in normal driving. I have added only 2 gallons of DEF in over 4000 miles so if you drive highways you will not have to fill up much. The oil spec'ed for the diesel has only two approved choices a Mobil and Pennzoil product and it isn't cheap nor is the filter. 7 quarts at around 8-9 bucks a quart and filters between 30-40 bucks will run you around 100 if you do it yourself and the dealer charges a little more. Changes are every 10K or when EVIC tells you to change it.

Also you need diesel fuel which not all gas stations have but more are getting diesel pumps because of more diesels entering the market.

I get fantastic mileage on mine and have found the diesel Overland to be one of the best vehicles I have ever owned...
Great information.
Thanks.

Up here we pay a heavy premium for diesel fuel.
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post #13 of Old 06-05-2014, 02:46 PM
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Hemi is tried and true. Diesel, well they have issues. Seems like a lot of issues to the point they're stuck at dealerships so you will get really good MPG in rentals.
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post #14 of Old 06-05-2014, 03:31 PM
Dave2002ti
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Price of diesel

Will go up during the home heating season depending on where you live and drop in the summer. Thats usually and minus the effect global geo political events.

Unlike the EU and UK diesel isn't subsidized through tax policy.

You have to work the numbers and see if a diesel makes sense for you over a V6 or V8.

I remember when VW introduced the diesel Rabbit. Not a bad vehicle back then. Kind of slow but it attracted an interesting group of mostly male drivers who at 40 plus still lived in their mom's basement. My 78 Rabbit with its Oettinger 16v conversion and 170+ hp for 1.6 liters used to freak them out.
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post #15 of Old 06-05-2014, 06:15 PM
rk1538
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do an test drive, Concern your dealer, and test it a weekend
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