E46: Gearbox Life

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musclehedz,thanx for the insight..i've jotted down all the numbers that u have posted and i'll have a check.
btw,any workshops that you'd care to recommend??
 
Gosh, I'm surprise to learn that even Heritage don't have the equipment to do transmission flush. I did mine at Benson Auto SS2 and the sifoo there, Mr. Liang used the ESSO ATF which he described to be higher spec-ed than Dexron III. It's been more than 10,000 kms since I did mine and the tranny is still sweeter than before I did that first ATF change.
 
JPB,

Mind sharing the cost and breakdown of parts changed for the ATF change?

Musclehedz,
Good write up! My valvetronic now is nearing the 57000KM mark. Do you suggest I do a flush or just a quick drain and top? Any idea whether the same ESSO ATF can be used on valvetronic as in 6-potters?
 
JPB,

Liang(he's a long friend of mine by the way) is quite competant in his work but not his workers. He has one workher ther quite short hair and chubby, never ask him anything especially gearbox flushes as he will tell you 'why want to flush? after flushing gearbox koyak wan you know?" duhh..

ESSO LT is not a higher spec of D3, its just a different spec due to different materials used in the more advanced and newer gearboxes. It's the additive package that resides in the ATF itself that differs as for the viscosity, it doesnt differ much and probably quite ignorant between D3 and ESSO LT. I believe D3 has got some additives will accelerate the wear of certain materials in the certain gearbox(which one exactly I can't remember) and of course ESSO LT also contain higher cleaning additives to clean the more sensitive solenoids as compared to the E36 GM boxes.

SG,

I don't really know who can do it in PJ that is quite competant (or you can try out Benson Auto as JPB went there) area but I send it to my friends shop which is quite far out of town to do due to the reason I can do it myself, just pinjam the equipments and still pay for the labour ;) it will take at least 14Litres and above to get it really cleaned. When I took my car from the previous owner, it took me 20litres to get it thoroughly cleaned, gosh i was wondering how long since it was flushed before. Now I just do a drop and top every 30,000-40,000km using fully synthetic Dexron III. And of course make very well sure the level is at the CORRECT level, some ppl inspect the level at the car angle either up or down which is wrong and also the ATF needs to be in operating temperature before the correct level is reached for checking. And also make sure they use the CORRECT fluid and not engine oil! coz I've seen some ppl making mistakes before in front of my eyes... D3 and ESSO LT ATF is always DARK CLEAR RED in color and and it has a nice tint or red when seen over a light source. It is never green, blue, yellow or pink..it has to be DARK RED. There are some engine oil in the market that is also red in color but not as dark so make sure you check it properly especially those shops that pour it out from the drum.


Ade,

My suggestion is...get it flushed as your box is still quite new. Keep it that way and you'll be a happy man and laughing your way to the gearbox later. You can flush now and next round to a drop and top and do another round of flushing say every 2nd drop and top, that should keep the gearbox happy. I think all E46 specs ESSO LT as ESSO LT is the equivalent of the original BMW ATF as speced by them (but please check your car's manual first, don't take my word for it) as it's equipped with the ZF 5 speeder right? The correct fluid that the gearbox will take will sure to come from the specs of either BMW themselves of ZF themselves, they will have a list of which ATF brand and grade is suitable for the gearboxes. I think I came across some other brands other than Valvoline now having the equivalent ATF such as penzoil and quakerstate. I'll try and get the ZF data sheet and post it here later...

And by the way, I don't believe in adding any form of additives into the lubricants and ATF is no exception no matter what they may claim. A lubricant is designed to have optimum amounts of additives either by cost factor or by quality factor. Any form of 3rd party additive may or may not react with the additives in the lubricants. One will never know even though one will claim that it doesn't, but how would they know? buy every single lubricant in the market and add it in and than send it for lab tests and than pay somebody to endorse it? Those counter reactions may happen and may not and if it does, it may take some time before the adverse effects show probably 100,000km later? and in the end...what happens? lifespan shortened. Our BMW machines are german engineered and I believe they are good engineering as we are paying for it and if they say that use only this fluid that is speced to their specification or that meet their specification and don't add in any additives to it, there is a reason behind it. All fluids that conforms to BMW specified lubricants do have a certificate for it from BMW to the lubricant manufacturers and I have some of it ;) So unless that particular lubricants says that is meets BMW spec and certified and tested by BMW, ok fine, lets see the certificate first else go ponder...
 
Also maybe some of you will notice that the manual specs say 8litres of ATF but when you flush or do a drop and top..you won't reach 8 litres, probably 6litres or so(it can be variable). This is because some of the ATF is in the torque converter. So it would be beneficial to do 2 changes during the drop and top. Step 1 drop and top and go drive around with the car make sures all the gears get shifted, drive slow drive fast. Once done drop and top it again as the final one. So this way can approximate that most of the old fluid is drained. If you keep at this method, probably you won't even need flushing to be done in the future if a constant mileage to change the ATF and good ATF is use. But to be on the safe side you can do the flushing else you can't see thru the gearbox to see if there are sludges unless you're superman...
 
wow..that's pretty detailed bro.thanx a million..
also i noticed that according to the chart my e46 328i uses the A5S 360R which is GM sourced but according to ETK,mine uses A5S 325Z which is ZF.maybe US spec ones comes with GM and ours come with ZF..

thanx,now i have more light thrown onto the matter..
 
i came to know from my foreman he say , that tranny oil if good can make your car more powerful by 25%. and he has this michine that can flush the oil out and put in new red line atf oil in it ,,, i saw him doing it on anothe car ...

must change atf oil.......
 
Excellent info!

Couldn't find my vehicle in the list. Anybody could help me find out what's my gearbox is and what ATF should I be using? My VIN is NG09093.
 
SG,

Your's is equipped with the ZF unit. So the correct fluid is the ESSO LT. Our region don't think so there are many or any E46 using GM box, you're right...in the states they use GM boxes for some.

Vincent,

25% more power? No lar, it's more like 5% of recovery of power from using a smoother ATF to reduce more friction. Yes, Red Line has a high temp fully synthetic ATF for high performance which I think it's called Red Line ATF D4 BUT it's not compatible to ESSO LT, compatible to Dexron yes.

Ade,

I don't think yours is GM, pop up the hood, look for the sticker with a torchlight on the gearbox with the bar code...it has something like ZFxxxxx or GM xxxxx(on the E36 boxes so i'de reckon it would be the same kind of labelling as on the E46).

By the way, the latest Dexron ATF is the Dexron IV but it's not available in the mass market yet. I've read that Red Line's D4 ATF has been made to conform to Dexron IV's specifications. Not sure if Dexron IV is backward compatible or not as haven't found any detailed information yet but to what I know Dexron IV's specification is catered towards better low temperature requirements.
 
Check your car's handbook manual, it's stated inside and don't forget to change the filter as well along with the gasket and make sure the person who is doing it don't apply any gasket sealants, else if the sealant gets into the gearbox, it can jam up the gearbox. The gasket wil expand by itself once its heated up and 'soaked' up with some ATF.
 
yellow, if im not mistaken, the SMG is similar to the alfa selespeed 'box and is therefore not a true automatic. i dont think u use ATF in there.

for the selespeeds, there's a gearbox lubricant and the selespeed system lubricant. u might have both, too. do check with ur mechanic so as not to put the wrong stuff into the wrong container.

afaik, Dexron4 is backwards compatible. Redline has D4 ATF and High-Temp ATF. Both are full-synthetic and Dexron rated. for high power/load applications, High-Temp ATF is recommended.

redd
 
Been using Redline High Temp Synthetic fluid since my tranny was replaced few months back, good stuff and the hotter it gets, the smoother the tranny is :) And its much cheaper than the lifetime oil :)
 
Originally posted by musclehedz@Mar 27 2006, 08:32 AM
Check your car's handbook manual, it's stated inside and don't forget to change the filter as well along with the gasket and make sure the person who is doing it don't apply any gasket sealants, else if the sealant gets into the gearbox, it can jam up the gearbox. The gasket wil expand by itself once its heated up and 'soaked' up with some ATF.
Dear Musclehedz

Ill check, thank you very much... :D
 
Originally posted by Redd@Mar 27 2006, 09:47 AM
yellow, if im not mistaken, the SMG is similar to the alfa selespeed 'box and is therefore not a true automatic. i dont think u use ATF in there.

for the selespeeds, there's a gearbox lubricant and the selespeed system lubricant. u might have both, too. do check with ur mechanic so as not to put the wrong stuff into the wrong container.

afaik, Dexron4 is backwards compatible. Redline has D4 ATF and High-Temp ATF. Both are full-synthetic and Dexron rated. for high power/load applications, High-Temp ATF is recommended.

redd
Dear Redd

Ill check with the car handbook manual. Thanks for your info..
 
recommand a brand new ATF Dexron VI

PETRO-CANADA DEXRON®-VI ATF
AUTOMATIC TRANSMISSION FLUID

Petro-Canada DEXRON®-VI is an exceptional automatic transmission fluid
approved by General Motors for use in vehicles with automatic transmissions.
This unique fluid is specially formulated to provide twice the service life of a
DEXRON®III (H) ATF and offers enhanced performance for both new and
older transmissions.It is designed to protect your transmission through
improved oxidation resistance, friction durability, shear stability and wear
protection to help meet warranty protection requirements in late model
vehicles. Designed to provide responsive shift feel throughout the life of the oil,
Petro-Canada DEXRON®-VI ATF consistently protects your car and truck
transmission longer than all previous DEXRON® type fluids.

Petro-Canada DEXRON®-VI ATF was developed in conjunction with General
Motors fluid design criteria for all 2006 and beyond model year vehicles with
automatic transmissions. General Motors recommends the use of
DEXRON®-VI for all automatic transmissions including those prior to 2006
model year. It is fully back serviceable where the former DEXRON®-III(H),
-III(G) and -IIE specifications were recommended. Meets GM latest service fill
specification, GMN 10060.
 
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