Noah911

I'm Ian. I just joined. Looked around a ton prior! Nice forum. I've got a few questions and stuff about my wj.

It's a 2004, 4.0L I6 2wd special edition gold Grand.
I got it with 100,000 miles. It was a one owner southern Raleigh NC car its entire life. Has a full service history report from the Jeep dealer that's also correlated to its carfax report. Every oil change, brakes, air filter, coolant syst maint, etc... Everything, and no major repair or work ever done for problem issues. It has 136,000 miles on it now.

I travel and use this Jeep. I go to difficult terrain areas. The 2wd wj Grand with Cooper AT3 tires.. when making sure to keep steady momentum pretty much rolls thru it all. So long as it's not deep mud or great hills of course. But it's sweet! I've taken it to and from Texas, Florida, North Carolina, Georgia... And now I am traversing to California from North Carolina. I want to do all maintenance and prep for the trip. I have no doubt this wj will go brilliantly without issue.

When I got it I replaced:
- spark plugs
- fuel filter
- engine oil and filter of course
- air filter
- coolant
And I think that was it.

I just replaced:
- battery (it was 5 years old)
- starter (it suddenly quit with no warning)
- thermostat (was loosing a lot of coolant from the
thermostat housing so replaced and sealed. I really
thought it was the water pump but renting the psi
test kit showed only here at thermostat housing)
- new fresh coolant g5 hoat 60/40 mix since it's been
almost two years.
- engine oil t6 rotella 5/40 and mopar filter
- new wix air filter
- aslo new front rotors and pads (back are good)

This is what I am planning next:
- diff fluid gasket replaced. Is there a certain type of
oil to put back in weightht or brand or an anti slip type
additive. (I don't know what I got back there. Except
its 4.0 2wd 2004) If it needs something or special
type diff fluid?
- transmission pan I want to drop and replace the
trans filter and gasket plus replace the trans fluid
that comes out when dropping the pan. About how
much fluid comes out and will I need for replacing?
Is there a special type or brand to use? I want to
drive it for about an oil change, and then repeat this
again to get even cleaner better fluid into the trans.

What else should I do at this age of 15 year old 136,000 mile vehicle? EGR or PCV or IAC or any other sensors to clean possibly replace? Clean throttle bobby up?

My wj runs really smooth. No strange noises at all. Engine and its belts and mech's look, sound, and run great. No rattles, creaks, clunks, wobbles, or anything to complain about, or would have me worry

I know that within probably two years I plan to replace radiator and all with new hoses and a new belt, water pump, wp pully, the other pully. Hoses look good, but not new.. Same with the belt it looks good right now. But none of that now.

Anything else anyone can think of for general stuff like this? Any advice for what I've got planned to do now? I just requested the full build-sheet for mine last night but haven't recieved it yet too. This wj has been really very good to me. I want to keep it up to speed in general maintenance so it stays a strong runner.

Thanks. This is a great place!