Good maintance goes along way!!!!!!!!

tjkj2002 · **Posted:** Sat Mar 29, 2008 10:06 am

Well I did a complete 60k tune-up on my KJ(fuel filter,tranny filter/fluid,engine oil,t-case,PS fluid,plugs,and all that good stuff) and from my trip from Colorado Springs to MOAB this morning my fat hog got 17.4mpg on the 1st tank,18.4mpg's on the 2nd,and a whopping 19.7mpg's on the 3rd.Not to shappy for a overweight beast loaded down with a suit case of clothes,a complete Frankinlift,cooler full of beer,and extra parts/fluids.Not to mention it already was at 5500lbs before all that extra wieght.

Good maintance seemed to be in my favor

.

dieselenthusiast · **Posted:** Sat Mar 29, 2008 11:09 am

tjkj2002 wrote:

Well I did a complete 60k tune-up on my KJ(fuel filter,tranny filter/fluid,engine oil,t-case,PS fluid,plugs,and all that good stuff) and from my trip from Colorado Springs to MOAB this morning my fat hog got 17.4mpg on the 1st tank,18.4mpg's on the 2nd,and a whopping 19.7mpg's on the 3rd.Not to shappy for a overweight beast loaded down with a suit case of clothes,a complete Frankinlift,cooler full of beer,and extra parts/fluids.Not to mention it already was at 5500lbs before all that extra wieght.

Good maintance seemed to be in my favor

.

That's amazing for that HOG, but hey, I think your homemade “cold” air intake inlet hose really helps, especially now that your motor is dialed in. The reason why I say that is because I'm getting 23-24 mpg on my factory 07, KJ running 0W30 motor oil in addition to my air inlet.

InCommando · **Posted:** Sat Mar 29, 2008 12:13 pm

But these things get horrible mileage.... :shock:

That is pretty darn good. You had to be pushing 6K.

jeepkj02 · **Posted:** Sat Mar 29, 2008 12:17 pm

tjkj2002 wrote:

Well I did a complete 60k tune-up on my KJ(fuel filter,tranny filter/fluid,engine oil,t-case,PS fluid,plugs,and all that good stuff) and from my trip from Colorado Springs to MOAB this morning my fat hog got 17.4mpg on the 1st tank,18.4mpg's on the 2nd,and a whopping 19.7mpg's on the 3rd.Not to shappy for a overweight beast loaded down with a suit case of clothes,a complete Frankinlift,cooler full of beer,and extra parts/fluids.Not to mention it already was at 5500lbs before all that extra wieght.

Good maintance seemed to be in my favor

.

Wow...big improvement over your usual 6-7 mpg's!! Hell, mine doesn't even get 19 mpg's, usually around 16/18 in the warmer months.

riptricket · **Posted:** Sat Mar 29, 2008 12:20 pm

ya, mine is not nearly as heavy as your's tjkj and i get maybe 15/17
got any pics of the air inlet that i keep hearing about? or is it a top secret project that you might have to kill me over? b/c either way i'd like to know!

hyedipin · **Joined:** Thu May 11, 2006 10:20 am **Posts:** 1667

I think t-case makes the biggest difference. I just got that done last month, my mpg went up from 14.5 to 16.2 on a good day.

riptricket · **Posted:** Sat Mar 29, 2008 12:34 pm

i am at 50K+ and i was going to do my front and rear diffs, but i have so much h/w... yeah college sucks!! but i am glad i am here,
so my question is, i don't think i have done a t-case flush ever?

should i wait for 60K, an do the t-case and diff's then?

or

do the diffs now and wait till 60K to do the t-case?

tjkj2002 · **Posted:** Sat Mar 29, 2008 12:52 pm

riptricket wrote:

i am at 50K+ and i was going to do my front and rear diffs, but i have so much h/w... yeah college sucks!! but i am glad i am here,
so my question is, i don't think i have done a t-case flush ever?

should i wait for 60K, an do the t-case and diff's then?

or

do the diffs now and wait till 60K to do the t-case?

I do my t-case every 2nd oil change,that's every 6000miles,the fluid is always pretty dark in my t-case by then from the added weight.ATF+4 is easy to find and not to much $$$ for just 2qts,takes like 10 mins to change.

riptricket · **Posted:** Sat Mar 29, 2008 12:54 pm

how do you do it? b/c there is no reason for me to have to take it in, and pay 100+ to have it done.
i think the reason people do not keep to the maintenance schedules is b/c every place is too da*n expensive!

tjkj2002 · **Posted:** Sat Mar 29, 2008 12:57 pm

riptricket wrote:

how do you do it? b/c there is no reason for me to have to take it in, and pay 100+ to have it done.
i think the reason people do not keep to the maintenance schedules is b/c every place is too da*n expensive!

That is why I do all my own work except for the tranny flush,I don't have a extra $7500 for the good flush machines like a dealership has.

riptricket · **Posted:** Sat Mar 29, 2008 1:05 pm

so how do i do my t-case? if i think it's plausible, i'll try it. i am really still a newbie when it comes to doing this stuff.

I tried to change my spark plugs, and i didn't feel comfortable moving the coolant bottle (i think that's what it was) and so i chickened out and had Precision Tune Autocare do it and they only charged me $50, when the board said $105, and it only took like 10 minutes.

bugnout · **Posted:** Sat Mar 29, 2008 1:22 pm

riptricket wrote:

so how do i do my t-case? if i think it's plausible, i'll try it. i am really still a newbie when it comes to doing this stuff.

I tried to change my spark plugs, and i didn't feel comfortable moving the coolant bottle (i think that's what it was) and so i chickened out and had Precision Tune Autocare do it and they only charged me $50, when the board said $105, and it only took like 10 minutes.

1. Remove the t-case skid if you have it. 4 bolts - do the crossmember bolts first then the side bolts
2. open the fill plug on the back side of the t-case
3. remove the drain plug on the back side of the t-case and drain the ATF+4 fluid
4. replace the drain plug
5. fill with ATF+4 until it starts overflowing from the fill hole. (probably need < 2 quarts)
6. replace fill plug
7. Replace skid plate

I thought there was a thread in the tech section but couldn't find it.

riptricket · **Posted:** Sat Mar 29, 2008 1:23 pm

there is no sealant to put on the plug or anything?

snowsport · **Joined:** Tue Oct 18, 2005 11:52 pm **Posts:** 1211

I couldn't find it either, but those 7 steps are really all there is to it. The skid plate is the only grunty part of the job, but it's not bad.

You can use a clean grease gun or Flo-tool to fill it because the fill hole is kinda high up in there. Just make sure the dripping is all done before you put the drain plug back in, and give the hole a wipe to dry it off first. I don't use sealant and no problems.

Jeepjeepster · **Posted:** Sat Mar 29, 2008 1:36 pm

Thats amazing tjkj. I figured mine up on the last tank of gas and only got 18mpg. That was taking it pretty easy too. I would say my average speed was 65mph. High being 75mph and low being 55mph.

bugnout · **Posted:** Sat Mar 29, 2008 1:37 pm

Capacities vary by the transfer case you have.

Transfer Case,NV231..........3.0 pints
Transfer Case,NV242..........3.4 pints
Transfer Case,NV241..........4.2 pints

riptricket · **Posted:** Sat Mar 29, 2008 1:43 pm

not sure which one i have...

BeepBeepJeepJeep · **Posted:** Sat Mar 29, 2008 1:53 pm

Is there a way to fill the TCase without using a hand pump? I hate monkeying around with those things...

snowsport · **Joined:** Tue Oct 18, 2005 11:52 pm **Posts:** 1211

I use a Flo-tool. It just screws onto the ATF bottle. Turn the valve, squeeze the bottle and done.

BeepBeepJeepJeep · **Posted:** Sat Mar 29, 2008 2:09 pm

snowsport wrote:

I use a Flo-tool. It just screws onto the ATF bottle. Turn the valve, squeeze the bottle and done.

That sounds like it will work... How do you clean it to avoid contamination if you use it with another type of fluid?

And where do you get it?

Good maintance goes along way!!!!!!!!

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