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  #37  
Old 11-07-2014, 04:13 PM
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Re: Maintenance Schedule

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Originally Posted by Jeepster910 View Post
I saw that maintenance list with my new Cherokee limited w/ tow. I have to say it makes me a bit nervous but who am I to an engineer.
The Transmission must have some built in sensor that will tell you if you start to burn up the fluid. Maybe service Trans light? There is no way to check it!
All my other jeeps had separate severe and tow maintenance lists to follow. But of course you now go 10/100 on coolant.

I have heard after the first oil change its as you want. Just avoid wasteful changes. That's what I will do. 2-3 x's a year depending on mileage. No way 1 year/10,000 miles.
I don't care what they say oil does get dirty. and dirt produces engine wear.

No way to check trans fluid, ok. Not good, but ok. But, if u drain fluid, how do u fill it.

Is there a filler spout in engine bay?


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  #38  
Old 11-07-2014, 06:59 PM
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Re: Maintenance Schedule

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Originally Posted by scottg918514 View Post
No way to check trans fluid, ok. Not good, but ok. But, if u drain fluid, how do u fill it.

Is there a filler spout in engine bay?


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There is a port that has a plug in it.
With a special kit/tool you can check it. Its basically the same as the dealer has, from what I understand.
I would imagine that is also the fill point. The only difference from prior transmission dipstick/fill point is this one has a plug to seal it. It is also not as convenient as the old dipstick tube was.

Unless you start leaking fluid I can not see any reason for fluid loss. Its not like engine oil. From my experience I have never had to add transmission fluid between my normal transmission maintenance periods. Those were every 2yr/20k in which trans fluid transfer case and axle fluid was changed by the dealer. The reason is I tow, not a lot but I tow.
Thus if you have no severe service, according to Chrysler its lifetime.
I still think Chrysler should have made the fluid check accessible to the owner. maybe a screw in plug with a dipstick attached.

I have settled on oil changes 2x a year or 50% life. I will continue to use conventional in the future. I just can not see going 1 year.
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  #39  
Old 11-07-2014, 07:21 PM
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Re: Maintenance Schedule

Checking the level on the 8spd seems a bit complicated if I remember correctly. I have the service manual and I read that section about a year ago and I remember concluding I wasn't going to mess with that. I typically do my own trans fluid changes but I think on this one ill let then take care of it. I have always been fairly aggressive with trans fluid changes but with this one stating no need to ever change (unless severe service) it ill probably hold off until 90 or 100 or something like that. im not a big fan of fill for life statements when you plan to keep the vehicle a very long time. of course with lifetime maxcare they will cover it if fails as they are stating no change interval with normal service right lol something to consider
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Old 11-07-2014, 07:31 PM
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Re: Maintenance Schedule

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Originally Posted by silvermax04 View Post
Checking the level on the 8spd seems a bit complicated if I remember correctly. I have the service manual and I read that section about a year ago and I remember concluding I wasn't going to mess with that. I typically do my own trans fluid changes but I think on this one ill let then take care of it. I have always been fairly aggressive with trans fluid changes but with this one stating no need to ever change (unless severe service) it ill probably hold off until 90 or 100 or something like that. im not a big fan of fill for life statements when you plan to keep the vehicle a very long time. of course with lifetime maxcare they will cover it if fails as they are stating no change interval with normal service right lol something to consider

Damn, I'm particular about monitoring transmission fluid, esp. since I tow in the summer and since the trans on the jeeps seems to run a little hot under normal operation

I usually (previous tow rigs) would pump out trans fluid and replace 4 or 5 qts every year. Dropping the pan every few years or so.

Sounds like this practice might be a pain with the Jeep.



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  #41  
Old 11-07-2014, 07:55 PM
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Re: Maintenance Schedule

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Originally Posted by silvermax04 View Post
Checking the level on the 8spd seems a bit complicated if I remember correctly. I have the service manual and I read that section about a year ago and I remember concluding I wasn't going to mess with that. I typically do my own trans fluid changes but I think on this one ill let then take care of it. I have always been fairly aggressive with trans fluid changes but with this one stating no need to ever change (unless severe service) it ill probably hold off until 90 or 100 or something like that. im not a big fan of fill for life statements when you plan to keep the vehicle a very long time. of course with lifetime maxcare they will cover it if fails as they are stating no change interval with normal service right lol something to consider
X2
The problem I have with no way to visually check. It is the issue of damaged/burned fluid, especially when one tows.
I gave up trying to service this one myself.
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  #42  
Old 11-07-2014, 09:11 PM
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Re: Maintenance Schedule

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Originally Posted by scottg918514 View Post
Damn, I'm particular about monitoring transmission fluid, esp. since I tow in the summer and since the trans on the jeeps seems to run a little hot under normal operation

I usually (previous tow rigs) would pump out trans fluid and replace 4 or 5 qts every year. Dropping the pan every few years or so.

Sounds like this practice might be a pain with the Jeep.



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yeah I have always been one to keep the trans fluid changed regularly also is important if you intend to keep the car a very long time. always done myself on other cars.

so on this one just checking the level involved stuff like having the wheels 8 inches off the ground while the engine is running and then putting jeep through gears and measuring exact temperatures of fluid and all this stuff. I pretty much stopped reading when it talked about all the wheels being 8 inches off the ground. sounded like it really needed to be on a lift to do it correctly. Not sure about you guys but one of those is not in my garage lol unfortunately. To me if I planned on keeping the Jeep 200K with non severe service this translates into one change around 100K with the rest of the 100K maintenance. just don't think I would be comfortable not ever changing it all the way to 200K.
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  #43  
Old 11-09-2014, 03:06 PM
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Re: Maintenance Schedule

This ZF transmission is serviced, checked and filled like virtually all 5-6-8 spd ZF transmissions.
To check the fluid level you have the engine running temperature of the transmission fluid between 80-120F. Pull the fill plug. If the level is correct (vehicle on level ground or on a lift level) fluid should weep out.
To service the transmission meaning to drain and refill or replace the pan and refill you always open the fill plug first. Then remove the large plug with a large Allen wrench. It varies as to size but 16-18mm is in the typical range. If you have sufficient mileage to warrant a change in transmission filter verify the filter is an integral part of the pan or not. Typically the filter and pan are one unit and made of ABS plastic. If you do replace the pan/ filter note the low torque values of the bolts that are holding the pan on. They are usually in the 6-8 lbs-ft range.
To fill the transmission replace the drain plug and get a fluid pump at Harbor Freight or similar place which will allow you to pump the liter bottles of LifeGuard 8 back into the transmission pan. Fill until the fluid weeps out then install the plug. Start the engine and allow the transmission fluid to warm to between 80-120F. At that point keep the engine running in park and open the fill plug again. Fill until weeping and you are done.

It isn't that hard to do and anyone who believes in lifetime transmission fluid believes in the tooth fairy too. BMW and many other brands used to call out lifetime fill now they call out 100K miles between changes. ZF on the other hand has always stated that the transmission fluid should be changed at 50K miles.
You really have to search to find that information by the way but it is there.

No manufacturer wants to tell you to change your transmission fluid especially since LG8 isn't cheap every 50K miles. I will most certainly change mine then.

I have serviced countless ZF 4-5-6 speed transmissions and they are usually robust and reliable transmission built to handle a lot more torque that what is advertised.

Here is where I have been getting my supplies for ZF transmissions for years. They are the cheapest place I know of.
LifeGuard 8 Transmission Fluid
I don't see he has kits for the 8 spd yet but I am sure he will stock them of just order a pan/ filter from the dealer.

If you choose to change the fluid that is up to you but here is how it is done...
Hope that helps some...
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  #44  
Old 11-09-2014, 03:11 PM
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Re: Maintenance Schedule

Thx, haven't experience an auto trans with drain and fill plug, just manuals. Good to know.


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  #45  
Old 11-09-2014, 03:18 PM
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Re: Maintenance Schedule

What amount do u usually get out. Autos tend to hold a lot. But, most stays in torque converter. That said, hand pumping 4-5 qts can take awhile, resulting in popyee forearms.


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  #46  
Old 11-10-2014, 05:40 PM
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Re: Maintenance Schedule

or you can catch every drop in a large pan and measure how much came out. Put that exact amount back in.
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