MrVtech

Wanted to know if there would be a problem with pouring wd-40 into transmission. And having it sit overnight pour it out next morning and refill with tranny fluid.
1) drain tranny fluid
2) pour wd40 to loosen junk at the bottom
3) drain wd40
4) put new valvoline maxlife fluid
5) drive around
6)flush valvoline
7)replace in line filter
And then do few more flushes.

Sludge inside tranny is really soft usually. I don't think that theory that flushing loosens junk and junk clogs valve bodies and etc. Fluid goes through servisable filter..
I rebuilt 2 transmissions..Those were oil starved transmissions. Mostly clogging material was broken in relatively large pieces clutch material. In various shapes. They were mostly stuck in solenoid "steel filters"

oo7spy

Is there anything we can say that would stop you?

MrVtech

I unstoppable. What's your problem? If u have some knowledge to share then post. If not don't trash potentially informative threads.

thoiboi

If you've rebuilt transmission, sounds like you know what you are doing, so are you asking if you can or just telling us you will?

MrVtech

well I am not all mighty god. . I know what fluid washes the outside of valve bodies, a shaft as its poured from the top.. but maybe dissolving stuff at the bottom is catastrophic. So i am doubtful. There is a poster "slowcivic" on honda tech.com.. Extremely knowledgeable in transmission questions. But such people are unreachable.
There is no reason to start general chat... I haven't seen anyone do it online.. and don't see why I cant. someone with more experience with auto tranies may know better. Maybe there is zero benefit it this procedure. .

thoiboi

I can't imagine putting anything into the transmission as beneficial other than fluid to drain out anything in there. Also I'm a ATF dW1 fan myself.. I prefer OEM fluids

01acls

LOL. Did someone call?

I would not recommend it. It probably will do more harm than good. WD40 is a penetrating oil with solvent to lower the viscosity to ad in penetrating minute crevices. With that said vapors would form and possibly attack any rubber material in its path. Namely drying, shrinking, and possibly cracking old rubber. Such as seals and O-rings.

Even if the solvents don't do significant damage the other concern is the loosening of the sediments. Once that's released it will leave an edge where the WD40 stop cleaning. That edge will probably leach sediments continuously until it's all gone or the fresh edge seals over again.

IMO those are unreasonable risk, ​ especially when there are products made specifically to clean the inside of the transmission. At least these chemicals have been engineer, tested and most likely safe to be use on the various transmission's materials.

​​​​​

MrVtech

dw1 is espensive around here.. maxlife valvoline is fine. Not trying to start a debate.. but I've read somewhere and comfirmed myself. Maxlife does not blacken as fast, and shifts are a bit crispier. Like driving a manual transmission. Arguably a bit faster response.. Not to confuse with rough shifting. I'll hold off on this novel tranny cleaning trick.

edit: thanks for last post.. as they say if it's not broken don't fix it) I just do a lot of long trips.. don't like to be stranded. Was hoping to avoid rebuilding one more transmission by cleaning sludge out. 150k miles. No issues.. but like to drive with piece of mind) will rebuild next winter.

01acls

It's much better to have clean ATF in the trans than to keep using old DW1.

If you're serious about maintenance then may I suggest that you forget about the 3x3 and start doing the 100% ATF exchange & the stop-n-go whenever the ATF starts showing signs of deterioration. Such as changes in color or burnt smell. And use a synthetic.

Clean sludge by doing more maintenance to clean it out slowly not by wishful thinking.

oo7spy

rockstar143

iTrader: (6)

Conflicting posts...
And I don't understand...you're asking for an opinion on a public forum.
007 merely stated what the other poster with factual informative information said, he just put it more simply.
Then you say you are not looking for a debate?

IMO this thread should be a "this is what happens when you run a gallon of WD-40 through your transmission"
Since it was your idea and it's your car.

I wonder if seafoam might be a better option since it's used to clean injectors and clear sludge from the intake plenum.

MrVtech

I still don't see how wd40 will shrink or dry seals. . It's the opposite of a drying agent.. acts like temporary lube sometimes.
Any way.. i decided not to use wd40. Just flush 3-4 times. Will get me through next 30-40k or so miles till I have time for another tranny rebuid

justnspace

iTrader: (1)

petroleum products WILL fuck up rubber seals

rockstar143

iTrader: (6)

Looks like this mystery is solved!

justnspace

iTrader: (1)

I introduced a petroleum product into my braking system, because I am a noob.

here was the result of petroleum + rubber



which one doesnt look normal?

MrVtech

yehehes.. bery fucking much so. Glad I asked question and got informative replies with vivid illustrations

rockstar143

iTrader: (6)

Just so we're clear for any future passers-by
we agree that this is NOT a good idea, right?
Thanks Justin!

MrVtech

to save justins valuable time I'll answer by suggesting to read the thread again. And carefully. The question is answered very clearly

rockstar143

iTrader: (6)

Now you're just pushing buttons...
for new people re-reading this thread, I don't want it to be as confusing as it clearly was for you when you started the thread.

DO NOT POUR A GALLON OF WD-40 IN YOUR TRANSMISSION.

OP is very grateful for Acurazine for helping him avoid this possibly costly mistake!

Clear enough for you?

MrVtech

No reason to get hysterical. It's not gonna be costly. It's still kind of on the edge.. wd40 won't bust rubber o rings in an instant or even few hours. In 40 hours or so effect will be visible. Wd 40at the bottom won't be washing any rubber. If u put a lot of it then maybe axle shaft seals, shift selector shaft seal and internal filter rubber o ring.
And again I won't be doing it because it's not a tested procedure.

So let's keep things civil. It's a forum for exchanging ideas experiences. Not a playground for emotional outbursts.
I forgot more about cars than ull know.. ) superstar123))

teh CL

iTrader: (1)

Why do you think you'll have to rebuild the transmission "again"? These things are pretty bullet proof

MrVtech

Well at 200k miles clutches tend to become thin. No clutch material left. I have original tranny with 150k miles on it. There are few design flaws that lead to torque converter fluid starvation. Basically couple of modified valves in valve bodies resolve this issue. Also really liked raybestos clutches. More responsive. I once had tranny failure because servicable filters rubber gasket hardened and broke in pieces. Starving tranny from fluid.. and on this car i just bought that filter showed signs of cracks.. so replaced it just in time. People forget about inline filter on the outside.. and just drive original for 100-200k miles

rockstar143

iTrader: (6)

I'm only going to say this once.
Be mature, and don't make it personal...this isn't the place for you to be sensitive.

Keep it on topic and do not, AGAIN, mislead future members into thinking that this MIGHT be an okay practice with no supporting information (especially on your behalf).
Asking if it's okay to do this is fine...ridiculing and poking at moderators asking you to please be careful with misinformation, is not.

Next warning will not be as kind. Understood?

MrVtech

I did not bother to read entire post.. waste of time . So are u the moderator here or something? If so Acurazine needs to find a replacement real quick. U are way out of line with antidepressants or other supements/stimulants I'd guess

rockstar143

iTrader: (6)

You are making personal attacks. It's pretty clear that I'm a moderator assuming you can read.
I am not going to warn you again. Keep the thread on topic and do not continue to try mislead other members.

You asked a simple question, it has been answered ad nauseam. IMO, this would be a candidate for a thread lock.