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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 08-21-2014, 05:00 PM   #1
glhx
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Transmission slipping when adding valvoline max life

Slipping when downshifting under heavy throttle from 4th to 3rd

At 110k I switched to valvoline max life. It was a full flush until the fluid went from brown to red. The old fluid was working fine but was very thin.

The other day I got a burnt clutch smell and I'm sure I fried the f clutch and probably overheated the steel ring.

I don't know if the max life caused this. I know the original is only a semi synthetic and max life us full synthetic. I'm wondering if the max life may be too slippery for this transmission.
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Old 08-21-2014, 09:35 PM   #2
HakenTT
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BMW automatic transmissions have "lifetime" fluid in it. So you should never do a flush, just add. Fluid is brown because of the clutch wear. Then you put in new fluid, it cleans and washes old debris, gets junk flowing around and thrashes the transmission.
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Old 08-22-2014, 03:51 AM   #3
daniel_f.
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Lifetime in terms of bmw understanding means 150tkm...

changing the transmission oil is always a good thing, as long as its the right quality and quantity.
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Old 08-22-2014, 11:13 AM   #4
jared_wiesner
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Originally Posted by daniel_f. View Post
Lifetime in terms of bmw understanding means 150tkm...

changing the transmission oil is always a good thing, as long as its the right quality and quantity.
Exactly, flushes on the other hand are often ill advised. Many "flushing machines" actually apply pressure to force fluid through the transmission past things it would never force past in normal operation. This in turn damages the transmission. A simple drain and fill is all that is required.

It wouldn't be the first time a transmission fluid flush has wrecked a transmission.
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Old 08-22-2014, 05:09 PM   #5
glhx
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It was not force flushed. Drained and refilled till the fluid was read......meaning old fluid gone and new fluid left in there. Took 25 quarts. I should have drained and refilled the oem fluid twice and let it be done.
Magnets were cleaned twice with very little on them the second time. Filter changed 2 times.

Quality fluid......I don't even know what that is to a certain degree and most people don't either. It's hit and miss. It's been said that max life was the one to replace the original bmw fluid. Since then......some have had problems and some have not as more and more people switched to it. It's full synthetic. Maxlife is a quality fluid.....but it MIGHT NOT be good for us to use. Especially if bmw isn't even using a full synthetic. Synthetics are thinner and more slippery. Maybe we need thicker and coarser.

Others have used red line with no problems.....no evidence yet of a fail

The original fluid I found out is only semi synthetic and should be changed every 60k as told to me by ZF. To bmw.....lifetime is 100k miles as people trade them in before then. Zf told me bmw was branding to people who like maintenance free and most car drivers ....like it to be except for oil changes. He told me the ZF was made to last 150k and fail. He also told me the reverse drum has been upgraded by adding 20,000ths of extra metal and any oem parts sold now will hold up better as the design flaws were worked out.

He recommended of course.....ZF life guard trans fluid (which is also semi synthetic) but also told me I probably fried 3rd gear clutch as I did smell it last time I dropped it into passing gear. It slipped and smelled.

I think the synthetic is too slippery for the clutches to engage the steels. Not sure what I'm going to do yet. I might just change it back and see if the oem fluids grit will keep the clutches alive for longer until I piece together a kit and rebuild it.

My thing is....DOES ANYONE ELSE on here have a problem with max life......and what did a flush do to your transmission. It took 20k with max life in mine to have a problem. ZF said it might not even be the fluid at fault and the previous owner hot rodded it. Who knows .....

Last edited by glhx; 08-22-2014 at 05:17 PM.
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Old 08-26-2014, 10:09 PM   #6
daves325in2012
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I run maxlife in my 5hp24 zf box in my 2000 540iA and the GM A5S390R in my 330cic

No issues even with my previous 325i running the same GM aside from an internal clutch seal leakage on cold start which maxlife seemed to actually help

Your problem could have been a issue with fluid level or something else

The maxlife fluid is fine and I've had no issues on all 3 BMWs

The ZF box (5 speed) now has 184,000 miles and I first introduced maxlife into its metal at 174,000 .. New filter and 25qts of fluid later its so much better than when I first got the car at 172,000 and back then it had its OE 15yr old fluid and filter combo

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Old 05-25-2017, 01:43 PM   #7
protocol1
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Valvoline Maxlife is not a ZF approved fluid. One ZF approved ATF is Pentosin ATF-1 and is 100% synthetic. OEM and ATF-1 fluids are not red, they are clear natural oil color. I use and recommend only ATF-1 fluid for ZF auto transmissions. ATF-1 is 100% OEM equivalent. (Esso LT 71141 spec) Maxlife is not, according to the ZF approved fluids list, despite Maxlife labeling that it is. The specific fluid used is very important. Using cheap non approved fluid is false economy and is not a practical option.
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Old 05-25-2017, 02:39 PM   #8
glhx
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I put that in my car based on lab research of another member.

The atf in our zf I don't believe is synthetic.

So far the max life has been in there for 50k with no problems. I need to change it. But I'm going back with max life regardless

If I blow it up I'll let everyone know as usual.

I also flushed with 25 quests but I'd do it differently next time.
I'd probably feed it through the lines as the car is running til it turns red.

The lifetime stuff was very broken down.....even bmw said change it 100k.
Not to mention......I'm not an engineer but zf made a transmission which had to be torn apart due to reverse drum failure. Bmw didn't recall this and your left with ripping apart the auto trans and replacing this trashed drum..
They also called a fluid......lifetime

Who's lifetime......
We all know they make parts based on budget and sell parts based on profit.
The design of all these parts has been around for years.
If zf ran special clutch packs........that use special designed fluid.....
Doubt it.....

I think I even straight up asked one of the guys at zf and called him out on the lifetime bs...
He told me
"We told bmw not to say that"
" they didn't listen"
"Max life will be fine"
"But I'd rather you run lifeguard because I work for zf"

Last edited by glhx; 05-25-2017 at 02:47 PM.
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Old 05-25-2017, 02:50 PM   #9
glhx
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Quote:
Originally Posted by HakenTT View Post
BMW automatic transmissions have "lifetime" fluid in it. So you should never do a flush, just add. Fluid is brown because of the clutch wear. Then you put in new fluid, it cleans and washes old debris, gets junk flowing around and thrashes the transmission.
This is correct.....
And it did happen to me.

While painting the car I let it sit for a while and the sentiment settled back down and was fine. Originally after the flush.....stuff got clogged and cause slipping.

It was not the fluid.
Have not had a problem since then.
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Old 05-25-2017, 11:44 PM   #10
Blu302
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I have been running Redline D6(X3 same 'box)as it was the only true synthetic I could find easily here in Aus. No semi-synthetic(or group 3 "synthetic") can meet the D6 spec because even with shear modifiers and thickeners added, they will degrade before the interval.
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