[Polo08816]

http://www.bentleypublishers.com/bmw...ir-manual.html

Might just wait for the manual to come out to see if I can glean some additional information.

[Polo08816]

Originally Posted by catskillclimber

http://www.xaturbo.com/collections/h...-044-fuel-pump

Depending on your tubing you may want to cut off some of the barbs so the hose doesn't kink. I snaked the hose up past the engine making sure to avoid the exhaust piping.

Go Navy....

Ah... so your funnel was located above the engine bay? Because I was wondering whether to go the route of a fluid transfer pump instead.

[Polo08816]

Attached.

[Polo08816]

Similar transmission. Wouldn't follow this as gospel but may answer some questions.

[cncmastr]

Thanks for posting that video!

[elborhamy]

the first page of the above manual stated that " is filled with lifetime lubricant. IF service or repairs have to be made to the transmission or ATF cooler, use only the approved transmission fluid"
At local dealership in Egypt, they again refused to replace it, they stated that " it is lifetime, if you want to replace it, do it on your own responsibility, any damages will not covered by us ", then they called local ZF dealer, which confirmed that it is lifetime
at the ZF site "http://www.zf.com/corporate/en_de/products/spare_parts/technical_information/lubricants/lubricants.html", they stated that i fthe file "TE-ML 11", that "5-, 6-, 8- and 9-speed as well as 4HP20 automatic transmissions:
ZF 5-, 6-, 8- and 9-speed as well as the ZF 4HP20 automatic transmissions are filled maintenance-free with specially developed
partially synthetic ATF oils. Maintenance-free fills are intended for normal operating conditions. Especially driving at very high
operating temperatures can result in accelerated aging or increased wear of ATF oils. It is recommended, in the event of severe
operating conditions, such as:
- frequent highway driving in top speed range,
- offensive, sporty driving style,
- frequent trailer operation,
being above average, oil purification (oil change) on automatic transmissions is recommended between 80,000 km and 120,000
km, or 8 years, depending on the load.
In each case, only released ATF oil may be used for oil changes. And oil changes must be performed in accordance with the
relevant specifications."
put they did not include any instructions or procedure to replace the GA8HP45Z, or any other 8 speed transmission on any place of the site while they have complete procedure for 5HP and 6HP "http://www.zf.com/corporate/en_de/products/spare_parts/technical_information/serviceinformation/si_corporate.jsp#tabs1-1"
my car now passed 141000 Km i did not changed the transmission oil "touch wood , No problems"

[Polo08816]

Just did the service and wanted to add a few tips:

Getting to the fill plug does require a special tool. A standard 3/8 rachet's head is too big and will not clear.
While this is not the exact tool I used at the Auto Skills Center, this will probably work: http://www.craftsman.com/craftsman-1...&blockType=G17



You will have to remove this heat shield to access 3 Torx transmission pan bolts on the right side of the transmission. I believe this was held by 3 13mm bolts. They are just hand tight.



I would first make sure you can open the fill hole before you actually drain the transmission oil. I used this to fill the transmission: https://www.motiveproducts.com/colle...-1-gallon-tank



ZF specifies an exact sequence for torquing down the 13 Torx bolts. Use this PDF in this post: http://f30.bimmerpost.com/forums/sho...1&postcount=11 The torque specification is around ~7 ft lbs.



Picture of the mechatronics module exposed.

[tiancu]

Here is the entire process described by ZF with video and all is very explicit so hope that will be helpfull
http://www.zf.com/brands/en_de/zf_pa...hange-oil.html

[Polo08816]

Originally Posted by tiancu

Here is the entire process described by ZF with video and all is very explicit so hope that will be helpfull
http://www.zf.com/brands/en_de/zf_pa...hange-oil.html

When I did this it took a while mostly due to waiting for the temperature of the transmission to come back down to an acceptable range.

If I had to do this again, I would probably do it with a coolant drain and fill.

I'd probably put both the ZF Lifeguard8 and the Antifreeze/Coolant in the freezer before I brought it to the garage.

[Polo08816]

I've attached the ISTAD procedures in a PDF as well as some screen shots in case anyone is still interested in doing this.

[weber_335i]

Thanks for these posts, very interesting.

https://www.fcpeuro.com/products/bmw...-24118612901kt - complete kit for $350 - $400

Bentley Service Manual for 3 Series (F30, F31, F34) has a procedure, see sections 240-2 through 240-5.

[Polo08816]

Originally Posted by weber_335i

Thanks for these posts, very interesting.

https://www.fcpeuro.com/products/bmw...-24118612901kt - complete kit for $350 - $400

Bentley Service Manual for 3 Series (F30, F31, F34) has a procedure, see sections 240-2 through 240-5.

Yes, however it basically tells you that you need to use a BMW scan tool (ie. ISTAD).

[harkes]

Has anyone succesfully DIY'ed this?

[insanecoder]

Originally Posted by harkes

Has anyone succesfully DIY'ed this?

Yes I did this after break-in recently.
It was not easy but prep-work made it go ok.. had to go back and refill more a second time cause I forgot a step.
The fill plug hex bolt ironically was the most difficult part..is problematic but I used a short hex male socket with a universal joint to undo it although a smaller socket wrench may be able to fit in straight.
Reattaching the fill via my torque wrench was much more challenging because it was 1/2" drive and it required a step-down.
ZF does not make it easy thats for sure.
However alot of the specifics are BS.. for example how much will transmission fluid actually expand given a 10 degree (even 50 degree) difference in temp given the coefficcient of expansion of oil? Then any expansion level over the large surface area of the pan would also make any level negligible.. then why would any engineer design a tranny with such sensitivity to pan fluid level over such a large surfacearea.. its complete BS. I can tell these guys are making it complex cause they want you to pay the service dept to do this.. it makes no engineering sense whatsoever.
BMW wants to sell the BS that their cars are maintenance-free .. ZF even stipulates 60,000mi oil changes.. Lifetime? Warrenty-lifetime maybe

[harkes]

Originally Posted by insanecoder

Yes I did this after break-in recently.
It was not easy but prep-work made it go ok.. had to go back and refill more a second time cause I forgot a step.
The fill plug hex bolt ironically was the most difficult part..is problematic but I used a short hex male socket with a universal joint to undo it although a smaller socket wrench may be able to fit in straight.
Reattaching the fill via my torque wrench was much more challenging because it was 1/2" drive and it required a step-down.
ZF does not make it easy thats for sure.
However alot of the specifics are BS.. for example how much will transmission fluid actually expand given a 10 degree (even 50 degree) difference in temp given the coefficcient of expansion of oil? Then any expansion level over the large surface area of the pan would also make any level negligible.. then why would any engineer design a tranny with such sensitivity to pan fluid level over such a large surfacearea.. its complete BS. I can tell these guys are making it complex cause they want you to pay the service dept to do this.. it makes no engineering sense whatsoever.
BMW wants to sell the BS that their cars are maintenance-free .. ZF even stipulates 60,000mi oil changes.. Lifetime? Warrenty-lifetime maybe

Did you do any of the software/coding wizardry to reset the AT or simply drain and refil?

[insanecoder]

Performed no wizardry.. if you look at the 8HP procedures for the other auto manufacturers which use the same unit theres no software wizardry.

[gtthree]

Also refer to my thread on the F10 site - where I also uploaded the official ZF oil change instruction for the ZF8HP box

http://f10.5post.com/forums/showthread.php?t=1228391

I've had the oil changed and replacement sump at 92k miles, the gearbox is now noticably smoother in parking situations between forward and reverse. High speed changes are smoother as well.

[harkes]

Finally had a chance to read through the post. Seems very doable if a laser thermo gauge will do for trans temp. I am only at 60000km but pushing ~650nm I better get to it

[F30ed]

Originally Posted by insanecoder

However alot of the specifics are BS.. for example how much will transmission fluid actually expand given a 10 degree (even 50 degree) difference in temp

I had exactly same thought. Fluid is just 2 inch deep over relatively large surface. 1 degree in car inclination would have more impact on fluid level at filling hole than 50 degrees of temperature expansion.


One thing I question: what is the value of bottom pan replacement? It has magnets that keep metal shavings, acting as sort of a filter. Time does not make magnets any worse and makes no more obstruction to fluid flow either. It is not like mash filter in engine that gets clogged. So what is the value in replacing the oil pan.....

[harkes]

Did a oil change last weekend. Everything went smooth but the 8AT behaved strange afterwards. A 30min battery disconnect seems to have solved that

Added 4.5 liter new oil so dont buy 8

[STR8-6IX]

Originally Posted by Fast400

What type of trans fluid? Dex vi?

Mannheim DexVi was used in my 8HP45. everything working great - nothing abnormal to report.

[Dima1978]

Hi, guys! Has anyone heard of an aux trans oil cooler line that gets emptied when oil is dropped. A valve in the cooler opens after 75C is reached; hence, the rumor is we need to go through a normal leveling procedure then drive around( to bring your trans to 75c+) come back for releveling. What do you guys think?