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  #1  
Old 08-31-2009, 09:54 PM
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Couple of questions

1. whats the story with tow/haul mode? ive been playing around with it and it feels like its a little peppier and i can feel it engine braking. does it help to use it when you're racing?

2. what grade of gas am i supposed ot be using? ive been putting 87 in and it feels like it could benefit from 89 oct.

3. what kind of oil and i supposed to use? ive always been a mobil 1 man. do they use 5w20?

4. are there any problems that i need to worry about?
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Old 08-31-2009, 09:56 PM
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Re: Couple of questions

fill us in on you jeep.
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Old 08-31-2009, 09:57 PM
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Re: Couple of questions

sorry, im new so i havent made a signature yet. its a 07 JGC 5.7 2wd limited
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Old 08-31-2009, 10:00 PM
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Re: Couple of questions

Ok, that's better.

now some of the WK specialists can chime in and help
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Old 08-31-2009, 10:29 PM
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Re: Couple of questions

You should use 89 or 91 or 93 Octane. I don't think it's good for you to be putting 87. As for oil someone will pop in.

Oh Yeah Joe could tell you the real use of the Tow/Haul Button.
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Old 08-31-2009, 11:04 PM
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Re: Couple of questions

Quote:
Originally Posted by chefalan23 View Post
1. whats the story with tow/haul mode? ive been playing around with it and it feels like its a little peppier and i can feel it engine braking. does it help to use it when you're racing?

2. what grade of gas am i supposed ot be using? ive been putting 87 in and it feels like it could benefit from 89 oct.

3. what kind of oil and i supposed to use? ive always been a mobil 1 man. do they use 5w20?

4. are there any problems that i need to worry about?
1.) Tow/Haul is my favorite button It holds the gears a little longer and it makes the HEMI very peppy. So yes it benefits while racing.

2.) 89 for a non tuned HEMI. I use 93 because I am CMR tuned.

3.) The Oil grade is 5-20. I used to use Mobil 1 but I did not like how it performed so I switched to Royal Purple.

4.) Problem Areas? Anything electrical, well at least in my experience.
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Old 09-01-2009, 02:14 AM
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Re: Couple of questions

Information on Tow/Haul: http://www.wkjeeps.com/wk_transm.htm -- It's great for around town, onramps and racing but disengage it for highway cruising.

89 octane gasoline for the hemi!

Nothing but 5w20 (preferably synthetic) or else your MDS won't function properly (MDS: http://www.wkjeeps.com/wk_engines.htm#MDS)

If you are under warranty check these TSBs: http://www.wkjeeps.com/wk_tsb.htm and see if your Jeep has any issues mentioned for your model year. Also listen for any irregular whine coming from the rear differential.. a few owners including myself have had it rebuilt under warranty.
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  #8  
Old 09-01-2009, 06:11 AM
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Re: Couple of questions

mobil 1 is perfect for any engine....royal purple is crazy $$$$$. I have a highly modified engine and use mobil 1.
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Old 09-01-2009, 09:05 PM
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Re: Couple of questions

Quote:
Originally Posted by BlackPepper View Post
Information on Tow/Haul: http://www.wkjeeps.com/wk_transm.htm -- It's great for around town, onramps and racing but disengage it for highway cruising.

89 octane gasoline for the hemi!

Nothing but 5w20 (preferably synthetic) or else your MDS won't function properly (MDS: http://www.wkjeeps.com/wk_engines.htm#MDS)

If you are under warranty check these TSBs: http://www.wkjeeps.com/wk_tsb.htm and see if your Jeep has any issues mentioned for your model year. Also listen for any irregular whine coming from the rear differential.. a few owners including myself have had it rebuilt under warranty.
what is the warranty on the 07 hemi? were they doing the 100k powertrain warranty in 07?
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Old 09-01-2009, 10:01 PM
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Re: Couple of questions

1. You race your Jeep, lol

2. 87 octane per the manual

3. Mobil 1 5w20 (7 qts)

4. 65,000 miles on my '06 5.7l 2wd and I have had none.

www.wkjeeps.com is a great site
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Old 09-01-2009, 10:59 PM
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Re: Couple of questions

Quote:
Originally Posted by Matt View Post
1. You race your Jeep, lol

2. 87 octane per the manual

3. Mobil 1 5w20 (7 qts)

4. 65,000 miles on my '06 5.7l 2wd and I have had none.

www.wkjeeps.com is a great site
i dont race my jeep, but i swear its faster than my buddies prelude si
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Old 09-02-2009, 06:03 AM
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Re: Couple of questions

it probably is.....
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