So I'm looking into replacing the transmission fluid in the truck I just bought. The fluid is still red and it doesn't smell burnt, but the guy who sold it to me did do a lot of towing. Its also a high mileage truck {250k)
Now, I've been reading more and more than doing a full flush at the dealership can be dangerous (they use a machine to drain the liquid, apparently you can dislodge things that might fuck up the tranny, yadda yadda), drain and fill won't replace all of it, but might be better
so is this true or what? my tranny works perfectly fine as far as I can tell. I'm just obnoxious about scheduled maintenance, but at the same time, I don't want to fuck my shit up
tl;dr: Are machine operated full flushes bad for older trannies, is a drain and fill a better option?
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
Bentley Foster
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.
Owen Cook
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.
Ethan Barnes
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
Camden Gonzalez
If it is slipping then what?
Kevin Jackson
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
Leo Martin
>Italian tuneup What did he mean by this
Camden Mitchell
The fluid isn't burnt but it's still slipping what do?
David Collins
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
Evan Ward
Could be plugged filter.
Kayden Sullivan
Would it matter if it only did it between second and third gear? And even then it doesn't always slip?
Ryan Jenkins
>italian tuneup >on a transmission you keep using that word...
Michael Morales
That is an interesting idea user, 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.
Jacob Allen
Worn clutch packs in the transmission, requires rebuild to solve.
Adrian Myers
someone pls reply
Parker Garcia
foot to the floor, give it max revs. it shakes lose the crap that builds up from normal driving. torque converter or DCT?
Henry Gutierrez
torque converter
Noah Morgan
purpose is different, procedure is the same. rather than burn off crap, you break it lose.
Brayden Fisher
does it bog the engine when you come to a complete stop from highway cruising speeds?
Yeah that's why rotaries need to be redlined often too
The name sounds funny as fuck but it makes perfect sense physics-wise
Nicholas Mitchell
Not really, no
Evan Murphy
how's your fluid level? does it smell or look burnt?
Mason Flores
Gonna be honest, I haven't checked it since I barely learned how to actually check it (VAGshit)
Nathaniel Mitchell
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
Gabriel Garcia
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
Lincoln Martin
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
>yes >he is literally filling the gearbox with fresh ATF through the sensor/solenoid port, because """"""""""German Engineering""""""""""
Lucas Scott
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
Jonathan Wood
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
Nicholas Ward
drain it, measure out the amount removed. check the manual for the needed ATF amount.
