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Old 09-02-2010, 02:11 AM   #1
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nooby maintenance question

So Im at 60k in my 2004 Tj and I just changed the oil and have a K&n filter. I am wondering what you guys would suggest for my maintenance. So far Im going to have the tranny flushed, change the spark plugs (not sure what to get), change the fluid in my differential (Royal blue possibly), maybe change the fuel filter to?


anything else you would suggest?


any help would be great

Thanks

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Old 09-02-2010, 06:39 AM   #2
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Do you have the owners manual for your year Jeep, if so, then should list the recommended items to look at and check for replacing. I'm not sure if the tranny would need flushing so soon, I'd have to look in my manual to see.

For diff fluif you can use the Royal Purple or Mobil 1

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Old 09-02-2010, 08:14 AM   #3
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Start off by tossing the k&n and get a diff type of filter. Clean the throttle body, tranny fluid is easy, I just did mine (2004 4.0 TJ) with royal purple synchromax. It made a huge difference with shifting. And maybe transfer case with a good ATF+4 synthetic. Spark plugs are also easy, I used, and a lot of people recommend the autolite app985. Do NOT get the ap985 (notice the 2 P's)
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Old 09-02-2010, 09:32 AM   #4
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If you already paid for the K&N filter and installed it, then just keep it, there's no need to toss.

Do you have an Auto or Manual??? since talking about tranny fluid.

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Old 09-02-2010, 10:01 AM   #5
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6 yrs. old, if you haven't done it, replace the anti-freeze, hoses and belt and the brake fluid.
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Old 09-02-2010, 10:47 AM   #6
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Pizzaman recommended replacing the K&N due to the fact that they are notorious for being one of the worst filters out there. They flow more air by sacrificing filtering. Many tests have shown this.
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Old 09-02-2010, 11:24 AM   #7
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Quote:
Originally Posted by Wildkarde
Pizzaman recommended replacing the K&N due to the fact that they are notorious for being one of the worst filters out there. They flow more air by sacrificing filtering. Many tests have shown this.
Exactly why I said that followed by cleaning the TB... : ) had bad luck with them on my last truck, so I do have experience with it.
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Old 09-02-2010, 11:30 AM   #8
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I wouldn't put a K&N filter on my lawnmower they are just junk with good advertising
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Old 09-02-2010, 11:55 AM   #9
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I dunno I have used k&n for years, on motorcycles, cars, and trucks. I never had any issues with them and all ran well when I got rid of them for whatever reason. I understand what some reviews and testing say but I will keep on using them just based on my personal experiences.
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Old 09-02-2010, 12:20 PM   #10
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I agree totally with the anti-K&N sentiments. Lab tests did indeed show it is pretty much the worst filter out there at actually filtering out fine dust like is encountered while offroading.

Before I knew better, I installed a K&N onto my last TJ and after a few wheeling trips, discovered the inside of my air tube and throttle body was gritty from desert dust etc. getting past the K&N "air filter". I was really upset, it had never been like that before I installed the K&N. It ended up taking two prefilters over the top of the K&N before the grit stopped collecting inside the air intake tube and throttle body.

Before I was able to get rid of the K&N, I had to run it with those two prefilters, shown below pulled back to show how they were positioned...

That TJ was stolen in March & the replacement '04 Rubicon I recently acquired came with an Airaid cold air intake that has a K&N air filter on it. I acquired a factory air filter box yesterday so I can replace that Airaid/K&N crap with a paper element air filter so I won't have to worry about the desert dust & silica getting into my engine.

If anyone wants my Rubicon's Airaid/K&N air intake, it is for sale.
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Old 09-02-2010, 01:14 PM   #11
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well I dont have the Jeep manual it didint come with the Jeep when I bought it.......

I have a manual trans

If the K&N isnt that great whats better?
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Old 09-02-2010, 01:40 PM   #12
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Quote:
Originally Posted by docholiday13 View Post
If the K&N isnt that great whats better?
The top performing filter in that batch of tests was an OE replacement paper element filter made by AC-Delco, with other good filters including Wix and Purolator.

Personally, I am getting rid of the Airaid and K&N that came on my Rubicon and replacing them with the OE filter box and an AC-Delco air filter I ordered last night from rockauto.com.

Trust me when I say this... that without exaggeration or this being simply a claim based on rumor, that the TJ's OE air intake system came right from the factory as a completely free-breathing system. It was specifically designed from the beginning to be completely free-breathing and totally non-restrictive. Really, that came right from Jeep's most senior engineer Jim Repp. No aftermarket air intake is going to make the TJ's engine perform better.

That isn't the case with many other vehicles that do indeed come with very restrictive air intake systems. Cars like the HP Mustang 5.0L, the Camaro Z-28, and a lot of other vehicles do come with restrictive air intakes that can and do benefit from an aftermarket air intake system.

The Wrangler TJ is not a vehicle that benefits from an aftermarket air intake system like some other vehicles do. Really.
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Old 09-02-2010, 01:42 PM   #13
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Quote:
Originally Posted by docholiday13
well I dont have the Jeep manual it didint come with the Jeep when I bought it.......

I have a manual trans

If the K&N isnt that great whats better?
I just use a cheap fram filter... $10-15 and replace it every other oil change.
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Old 09-02-2010, 05:16 PM   #14
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i heard a tranny flush is not a good thing to do with a car with high miles (over 100,000) is that true and why?

ps i dont see why it would hurt but i have known to be wrong.
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Old 09-02-2010, 09:09 PM   #15
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i heard a tranny flush is not a good thing to do with a car with high miles (over 100,000) is that true and why?

ps i dont see why it would hurt but i have known to be wrong.
I dont see how a tranny flush could be bad for it... In my opinion it could only be a good thing, your going to be putting new lubricant in there and getting all the metal shavings and dirt and any other crud out of there.
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Old 09-03-2010, 12:18 AM   #16
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I thought you were suppose to flush the the tranny every 30k?
Personally I just want everything oiled up to help keep my baby uh I mean my Jeep healthy.
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Old 09-03-2010, 11:00 AM   #17
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I have been told that flushing a tranny that is over 100K is bad because you could knock stuff loose and cause problems but that just a simple change at that mileage is fine and should be done. There is a difference between a fluid change and a flush. That's just what I have heard.
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Old 09-03-2010, 07:18 PM   #18
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Quote:
Originally Posted by snwchris View Post
Do you have the owners manual for your year Jeep, if so, then should list the recommended items to look at and check for replacing. I'm not sure if the tranny would need flushing so soon, I'd have to look in my manual to see.

For diff fluif you can use the Royal Purple or Mobil 1
I have heard from a few sources to NOT use synth in the diffs, in fact Currie will deny warranty claims on their axles if you do FWIW.....
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Old 09-03-2010, 07:20 PM   #19
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I have heard from a few sources to NOT use synth in the diffs, in fact Currie will deny warranty claims on their axles if you do FWIW.....
That is very true. I switched to a non-synthetic 85W-140 Torco sold by Currie for my axles several years ago for that very same reason.

Page three at http://www.currieenterprises.com/ins...ions_adder.pdf confirms Currie's instructions not to use any kind of synthetic gear lube in any of their axles which would void their warranty.

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