Where to add transmission fluid?

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JEDI

Lifer
Sep 25, 2001
29,391
2,736
126
where did you get it flushed or drained? Did they use the correct MV fluid (reminder....MV is not Mecron V)? If they did not use the correct fluid, then you need to change it well before 60K.

The only other thing I can think of is if they drained it using the car's tranny fluid pump, then they did not secure the clip on the line correctly and it was leaking a little at a time.

I am trying to remember if the 3 has a low indicator on the dip stick, but i cannot remember. If the fluid is in between the low and high indicator when you check it, it should be fine. If you do want to top it off, do it slowly. It takes a while for the liquid to go down.

goodyear garage. but they're the same guys who said while my car was in the air they could push up my rear tires like my shocks were gone. (warning bell sounded-> what about the springs?)

never went back to that place. so yeah the atf flush could be suspect. sigh..
 

bobdole369

Diamond Member
Dec 15, 2004
4,504
2
0
Transmission fluid is a *hydraulic* fluid. it isn't a lubricant. It normally shouldn't - and in my experience doesn't get filled with crap.

Case in point - I had an 89 firebird in 2001 - 180k miles on it (was a free car for doing work for a friend). The guy I got it from had it since 94 (it was his graduation present, at 40k miles). This guy never once changed it. It might have been done from 89-94 but I really doubt it. I really feel that I was the first one to pull off the tranny pan.

What did I find? Dark red transmission fluid, colored assembly lube near the magnet (further adding to my thought that the 180k mile old fluid was the factory fluid), a bit of metal (as expected). and nothing more.

In fact I knew perfectly well that I was on borrowed time so I went and swapped in a junkyard tranny. When I pulled the pan off that 88 firebird in the yard with an indicated 150k miles - it didn't have any assembly lube on the magnet, and its tranny fluid was ALSO dark red. So that was a random transmission, that was obviously changed at one point. Same looking fluid.

The end of that firebird came from a crazy suburban mom btw.

Tranny fluid isn't exposed to the air, it doesn't regularly mix with burning fuel, it isn't used to cool rapidly moving rockers or to clean cylinder walls or even to lubricate most of the time. It's hardest job is as a fluid coupler where its sent spinning round and round in a sort of a torus at high pressure.

It is used as a fluid coupling when the TCC isn't engaged, its pumped around in various passages, and pushes gears and clutches and steels around in various combinations. As a fluid coupler its used as a purely hydraulic fluid. I never understood why folks think it builds up with crap.
 

Gibson486

Lifer
Aug 9, 2000
18,378
1
0
goodyear garage. but they're the same guys who said while my car was in the air they could push up my rear tires like my shocks were gone. (warning bell sounded-> what about the springs?)

never went back to that place. so yeah the atf flush could be suspect. sigh..

I am willing to bet they did not use the right fluid. Even if they did not use universal fluid and put detergents in it, I doubt they went the extra mile and put MV or MV compatible fluid. You can use mecron V fluid, but the intervals will be much shorter than 60K between changes.

The only thing i can tell you is too bring it to a trustworthy mechanic. ask him to look at the fluid and to drop the pan to see what is in it (this is not going to be a free service).

If you want to do a preliminary check yourself, go under, and just drain the pan yourself. Drain it into a small bucket. See if there are any metal shavings in the liquid. If lots of metal shavings come out, then that means the magnet in the pan is covered in shavings and your tranny may need to be serviced.

If you lived in MA, I could tell you where to go. If i remember, however, this is not the case.
 

LTC8K6

Lifer
Mar 10, 2004
28,520
1,575
126
How can the flush be the problem? Didn't you say it was 40K miles ago?
 

JEDI

Lifer
Sep 25, 2001
29,391
2,736
126
i went to walmart and tried to buy aft fluid.
wtf is with all the differences? Type F? Mercron?

they have stuff for improrts and old gm/fords. but nothing on new Fords (aka Mazda3). no valvoline.

i bought SuperTech (walmart brand) extended miles atf. did i guess right?
 

exdeath

Lifer
Jan 29, 2004
13,679
10
81
The obvious answer to ops question: transmission fluid goes into the transmission.


:awe:
 

LTC8K6

Lifer
Mar 10, 2004
28,520
1,575
126
That's made by Warren, according to the net, but it's nothing special.
 

twinrider1

Diamond Member
Sep 28, 2003
4,096
64
91
OP, your owner's manual will tell you what type you need and the right procedure for checking/adding fluid.
Forums are great, but the owner's manual should be your first step.
 

JEDI

Lifer
Sep 25, 2001
29,391
2,736
126
just reaad my owners manual.

no sched for atf change?!

and atf fluid is mercon v, not mv.

the supertech atf i bought is compatible w/mercon. that ok for my car?
 

LTC8K6

Lifer
Mar 10, 2004
28,520
1,575
126
It should say Mercon V on the bottle if it's compatible. If it does, it's fine.
 

LTC8K6

Lifer
Mar 10, 2004
28,520
1,575
126
I would top it up with the fluid you bought, and see if that stops the slipping.

If it does fix the problem, then go and have it drained and refilled and find and fix the leak.

If it does not fix the problem, then you need to have the problem diagnosed, and you'd still need to fix the leak.
 

slag

Lifer
Dec 14, 2000
10,473
81
101
Only time you need to change the fluid at 30k is from towing/racing/other high temp applications. Trans fluid temp during normal highway cruising is low enough that it can last more than 100k no problems.

x2

In any recent car (up to 15 yrs old), the interval of ATF changing should be around 100k miles.
 

slag

Lifer
Dec 14, 2000
10,473
81
101
Yea tell that to a lot of people with bad trans. My fluid has less than 50k and is gone. FWD cars are even harder on trans fluid.

Explain gone. Smells burnt? ATF should smell burnt, it lubricates the clutch plates and gears in your transmission. Of course its going to smell warm and burnt. If your ATF is bad at 50k miles, you have larger issues with your transmission.
 

slag

Lifer
Dec 14, 2000
10,473
81
101
Transmission fluid is a *hydraulic* fluid. it isn't a lubricant. It normally shouldn't - and in my experience doesn't get filled with crap.

Case in point - I had an 89 firebird in 2001 - 180k miles on it (was a free car for doing work for a friend). The guy I got it from had it since 94 (it was his graduation present, at 40k miles). This guy never once changed it. It might have been done from 89-94 but I really doubt it. I really feel that I was the first one to pull off the tranny pan.

What did I find? Dark red transmission fluid, colored assembly lube near the magnet (further adding to my thought that the 180k mile old fluid was the factory fluid), a bit of metal (as expected). and nothing more.

In fact I knew perfectly well that I was on borrowed time so I went and swapped in a junkyard tranny. When I pulled the pan off that 88 firebird in the yard with an indicated 150k miles - it didn't have any assembly lube on the magnet, and its tranny fluid was ALSO dark red. So that was a random transmission, that was obviously changed at one point. Same looking fluid.

The end of that firebird came from a crazy suburban mom btw.

Tranny fluid isn't exposed to the air, it doesn't regularly mix with burning fuel, it isn't used to cool rapidly moving rockers or to clean cylinder walls or even to lubricate most of the time. It's hardest job is as a fluid coupler where its sent spinning round and round in a sort of a torus at high pressure.

It is used as a fluid coupling when the TCC isn't engaged, its pumped around in various passages, and pushes gears and clutches and steels around in various combinations. As a fluid coupler its used as a purely hydraulic fluid. I never understood why folks think it builds up with crap.

Part of your post holds merit, part doesn't in my opinion. The hardest work that the transmission will do is friction on friction with the clutch discs. The ATF lubricates those and they are what builds up the heat in your transmission. As the clutch plates press against each other during gear changes, they wear and particulate from the clutch plates gets into your transmission fluid. In addition, no matter how hardened the gears, torrington bearings, drums, planetary gear sets, and other associated parts of your transmission are, they will eventually wear and that is the metal you see attached to the magnet in your pan. That is where the "crap" from your transmission comes from. The overdrive bands also wear and that material gets into your ATF.
 

slag

Lifer
Dec 14, 2000
10,473
81
101
just reaad my owners manual.

no sched for atf change?!

and atf fluid is mercon v, not mv.

the supertech atf i bought is compatible w/mercon. that ok for my car?

Mercon V is now spec'd by Ford for use in older vehicles that spec'd Mercon. Vehicles that spec'd Mercon V cannot use the older Mercon fluid.

I don't know if the same is true for Mazda but I imagine it is.
 

JEDI

Lifer
Sep 25, 2001
29,391
2,736
126
I would top it up with the fluid you bought, and see if that stops the slipping.

If it does fix the problem, then go and have it drained and refilled and find and fix the leak.

If it does not fix the problem, then you need to have the problem diagnosed, and you'd still need to fix the leak.

so if it says mercon compatible its ok for both v and vr types?
 

LTC8K6

Lifer
Mar 10, 2004
28,520
1,575
126
so if it says mercon compatible its ok for both v and vr types?

I can't answer that without seeing the bottle.

However, I wouldn't worry about it. You will only be adding a small amount as a test to see if the slipping is caused by low fluid level.

You won't be leaving the fluid in there.

You need to drain and refill anyway.

If adding the fluid cures the slip, then you have your answer, and since the trans has been slipping, you need to do a drain and refill.

If adding fluid doesn't cure the slip, then you need a diagnosis, which will probably involve draining the fluid anyway.
 

Gibson486

Lifer
Aug 9, 2000
18,378
1
0
Well, Mazda3 uses MV fluid. Maybe they changed it on later models years, but my manual even says MV and there is even a TSB from Mazda warning dealers that mecron V is not a substitute for MV.

http://www.finishlineperformance.com/pdf/tribute/05-005-08-1928.pdf

When I flushed my fluid, I just used Mobil 1. It says on the bottle that it is compatible with MV, so I bought it. I think Casterol also has a version that is compatible and I heard valvoline maxlife works too.

Also, if the bottle just says mecron, chances are it is not mecron V.
 
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Gibson486

Lifer
Aug 9, 2000
18,378
1
0
i went to walmart and tried to buy aft fluid.
wtf is with all the differences? Type F? Mercron?

they have stuff for improrts and old gm/fords. but nothing on new Fords (aka Mazda3). no valvoline.

i bought SuperTech (walmart brand) extended miles atf. did i guess right?

If you want to cheap out, go to autozone or advanced auto and buy the generic mobil 1. that is...if they still sell it. It says compatible with "Mazda M-V" on the bottle.
 

LTC8K6

Lifer
Mar 10, 2004
28,520
1,575
126
Wrong ATF could have damaged your transmission, which could be showing up now as slippage. It could also be the reason it's low.

Look on your receipt?

I doubt you can tell by looking after all this time.

If you are worried about the supertech stuff, just take it back and get a quart of MV from a dealer. Top off and see what happens.

You need to fish or cut bait.
 

T2urtle

Diamond Member
Oct 18, 2004
3,432
3
81
valvoline max-life red bottle ATF should cover most import brands. This got popular recently and i've been meaning to pick up a case for the cars i work on.

But before that got popular and known to be decent i opted to only buy dealership fluids via ebay and online part stores. At the dealership they wanted $10-15 per quart of ATF, i get the same stuff for about $5-7 shipped if i buy a case of 12. You never need one, you need about 4-5 to do drain and fills. So now i have about 6quarts of nissan-D, 6 qt nissan-S, 8 of mitsi SP3, some honda Z1 stuff. All this would of been taken care of if they came out with/ i found out about max-life ATF sooner.

Guys on the bobtheoilguy forums seem to support it and those guys are NUTS when it comes to oil related stuff. Most do their own work and have TONS of oil stashed away.

If you got the right supertech, then roll with it. If not i would recommend you get MAX-LIFE
 

JEDI

Lifer
Sep 25, 2001
29,391
2,736
126
valvoline max-life just says Mercon V, not MV. multiple boards say dont use for MV.

Mobil1 synthetic aft does say Mercon MV. i bought that ($10). put in ~8oz. lets see if the slipping stops.

LTC8K6- yeah, i needed to stop the info overload and take action. thx!
 
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