smtippin

I am hesitant to start a thread about oil, filter and other maintenance products because it seems everyone has their own opinion, but I'm afraid I might miss something important if I don't. My motorcycle takes very specific fluids (e.g., silicate and phospate free coolant to not destroy the water pump, etc.) so I want to make sure I'm using the best product when time comes to do a complete tune-up on a late 90's XJ with A/T. That being said what _____ do you use? (NOTE: I can read the manual, so please only comment if you have found products that are better than those specified in the book).



Brake fluid (brand and dot number)
Motor Oil
Coolant
Transmission fluid
Power Steering fluid
Differential oil
Transfer Case fluid
Axle Fluid
Air Filters

Oil Filter
Fuel Filter
Spark Plugs
Spark Plug Wires
Cap, & Rotor

76ANTHONY

WHAT YEAR JEEP? that will sometimes make a difference, but i got a 87 so im using my tried and true autozone filter set and my favorite oil, cheap. but its not permanent and im glad you started this thread cause i to will be going through all my stuff after the 1st of the year. i just changed everything with cheap stuff for now cause i have no idea what the po did before i got it.

93XJLI

i'll bite.

Brake fluid (brand and dot number) anything, DOT3 ONLY unless you flush out the entire system clean. if you mix types you will not have a good day
Motor Oil15w-40 turbo diesel oil. i actually just picked up some mobil 1 5w-30 for winter bc they didnt have enough 5-40 diesel oil
Coolant anything green
Transmission fluid anything dex mex III
Power Steering fluid cheapest
Differential oil i use valvo full syn 75w-140 bc i get it for free, but i would put full syn in there anyway bc i paid so much for everything iside those damn axles
Transfer Case fluid idk whats in there now, probably some regular brand atf when i flushed it when i got the jeep. probably will put full syn in this summer when/if i overhaul it
Axle Fluid same as diff fluid...
Air Filters good ole paper

Oil Filter mobil 1 m1-301. oversize FTW
Fuel Filter fram? its the only one the store carries
Spark Plugs i think i have champions in there. expensive plugs arent worth it
Spark Plug Wires lol youre getting pretty specific here
Cap, & Rotorhere too. whatever the parts man gave me

sandstone

Brake fluid (brand and dot number) anything, DOT3 ONLY unless you flush out the entire system clean. if you mix types you will not have a good day
Motor OilMobil 1 10w-30 + ZDDP additive (Comp Cams)
Coolant Prestone green
Transmission fluid depends on year of trans
Power Steering fluid cheapest
Differential oil Mobil 1 synthetic
Transfer Case fluid depends on year
Axle Fluid same as diff fluid...
Air Filters Fram paper

Oil Filter mobil m-1 204.
Fuel Filter ?
Spark Plugs Autolite
Spark Plug Wires Accel Super Stock
Cap, & RotorAccel

jeeptech

Motor oil and gear lube - upgrade to correct viscosity synthetic
Tranmission and transfer case use Dexron3
Green coolant (flush and change every 2 yrs)
Dot 3 brake fluid.
Champion plugs
Filters that say "meets or exceeds manufacturers specifications"
Beer from bottle or keg only! (unless cans are all that's available)

93XJLI

the tcase takes ATF

whowey

Dexron III is automatic transmission fluid.
Before the Chryco buy-out AMC/Jeep also spec'ed Dexron for the transfer case.

93XJLI

meh, i follow my FSM

OAS

..

smtippin

What year, eh? Well I'm not quite sure since I'm hoping to get my rig shortly. There just aint much selection when you live in Wyoming. (Sigh)

I'm looking at any XJ 94 to 01, although I prefer the 96-99. Doesn't help much I bet. I've been checking the poster's profile to know what year they have.

s

whowey

Do what you want.. But you missed the point... The FSM pre-Chryco calls for Dex II/III. Chryco bought Jeep in August 1988, so there are at a minimum 4 years of XJ's before Chryco influence(and accountants) took over.

From the 88 FSM....
Required Lubricant:
Jeep Automatic Transmission Fluid or the equivalent marked Dexron II

Not a single mention of Chryco's ATF+x anywhere in the FSM....

93XJLI

well i have a 93 and its a 93 FSM.

novak's site states that ATF is used in the tcases.

http://novak-adapt.com/knowledge/np231.htm

4x4xplor's site also calls for ATF+3

http://www.4x4xplor.com/trannyservice.html

jeeptech

I've worked at Chrysler/Dodge/Jeep dealers since 1978 and back then our ATF was Dexron. When lock-up converters came out Chryco added friction modifiers to Dexron and called it ATF+. When electronic trans became popular and broke often, it was determined to be caused by more heat than the fluid could stand so the formula was changed to tolerate more heat (ATF+2) and more heat (ATF+3) and more heat (ATF+4). The transfer case doesn't have clutches so doesn't need friction modifiers and doesn't run hot enough to need ATF+ whatever. So what I'm saying is Dexron is what's recomended for the AW4 trans and can also be used in your transfer case, but ATF+2,3, or 4 will also work. That being said, Grand Cherokee guys need to check their owners manual as some full time systems do have clutches and require ATF+4 to prevent chatter.

99xjlove

To add on this subject........at the begining of 2008 all Dextron III products were superceeded (sp) by the ATF+4 specification. I work at an extremley busy Lube shop, and also being the best in our town. It's not a run of the mill Grease Monkey or Jiffy Lube. It is private owned and very well maintained. We made a complete changeover at the first of the year and now only use Dextron III products for topping off power steering in Fords. Anything Pre-96 you can use DexIII but after you should use ATF+4 or equivlent, in the Trans and transfer case.

Metmknice

Amsoil full syn FTW! For oil filters I run Wix or Napa Gold which is identical. Right now I have a K&N in my Jeep, was there when I bought it, when I do a tune up soon I will be getting the Amsoil air filter for it.