ATF flush vs drain

>>17493561
If you do it when scheduled on the manual you could but since you don't know if the transmission fluid is the original or when the last time it's been changed I would just drain the fluid and refill and change trans filter if you can

>>17493561
Just do a drain every 10k or so miles, ATF Bottles are like 10-15 per qt so its like 30-45 dollars versus the 250 or some shit they charge for your 75k full flush. It's just easier and cheaper.

What I do when I buy a car with unknown history is undo a tranny cooler line at the radiator, buy a gallon of atf.

Have the cracked line in a gallon jug, and run the car for 20 seconds or so increments adding new atf so ideally you have a gallon drained and a gallon added.


Do this every oil change and you slowly purify your atf, without any drastic changes.

It's also easy as fuck.

>>17493561
if the transmission isn't slipping noticeably, I usually recommend drain, fill, Italian tuneup, then drain and refill. if you keep it clean you won't have to rely on gunk to hold it together later in life

>>17493769
If it is slipping then what?

>>17494164
don't touch it, just top off the fluid. if the fluid looks burnt, you'll likely have to do the change anyway so best of luck

>>17493769
>Italian tuneup
What did he mean by this

>>17494173
The fluid isn't burnt but it's still slipping what do?

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Should I do a tranny flush or drain if my gearbox has "hard" shifts?
>e.g: when braking and the gearbox is downshifting, the downshifts create a noticeable jerking motion

>>17494220
Could be plugged filter.

>>17494637
Would it matter if it only did it between second and third gear? And even then it doesn't always slip?

>>17493769
>italian tuneup
>on a transmission
you keep using that word...

>>17493756
That is an interesting idea anon, I've done flushes like that. I wonder if the risk of valve body clogging is reduced by slowly changing shit dirty atf with clean. I can't imagine it would help a worn clutch pack, probably hurt it, if I recall correctly.

>>17494881
Worn clutch packs in the transmission, requires rebuild to solve.

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>>17494550
>>17494550
>>17494550
>>17494550
>>17494550
>>17494550
someone pls reply

>>17494182
foot to the floor, give it max revs. it shakes lose the crap that builds up from normal driving.
>>17494550
torque converter or DCT?

>>17496113
torque converter

>>17494928
purpose is different, procedure is the same. rather than burn off crap, you break it lose.

>>17496118
does it bog the engine when you come to a complete stop from highway cruising speeds?

>>17494182
>its got its own page
I laughed.

https://en.m.wikipedia.org/wiki/Italian_tuneup

>>17496132
Yeah that's why rotaries need to be redlined often too

The name sounds funny as fuck but it makes perfect sense physics-wise

>>17496129
Not really, no

>>17496276
how's your fluid level? does it smell or look burnt?

>>17496287
Gonna be honest, I haven't checked it since I barely learned how to actually check it (VAGshit)

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>>17496345
Note: I dont mean this like "hurrrr I just figured out where the ATF dipstick wuz!"; VAGshit engineers decided to eschew an ATF dipstick option so I found out just a couple weeks ago that I have to actually get underneath and undo the transmission drain plug just so I can check the transmission fluid

>>17496412
dammit, hanz. this is basically "take it to the dealer or it's your fault when the transmission slips"
I think BMW has been doing this for a while now

>>17496426
Wul...apparently I can replace the fluid + filter on my own at home according to my "friendly YouTube redneck", but I'm just wondering if doing this will remedy the "hard (down)shifting" problem or if it's just a temporary measure for some more dire problem

https://www.youtube.com/watch?v=c-7TYJ6VxKk

>yes
>he is literally filling the gearbox with fresh ATF through the sensor/solenoid port, because """"""""""German Engineering""""""""""

>>17496441
my thought is that the level is higher than it should be, and the converter grabs faster and harder than it should. could be wrong though

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>>17496455
I don't even know how to check the "'level" of ATF in the gearbox, just whether or not it's burnt/smelly...I really am considering getting rid of this for something else but I can't afford that at the moment

>>17496470
drain it, measure out the amount removed.
check the manual for the needed ATF amount.

>>17496477
Thanks, fampai.