Recent Topics
PPM calculations
by HighMileCummins
Today at 01:56 AM
Overheard at Toyota
by bobbob
Today at 01:39 AM
10/21-11/17 AutoZone Ad
by tenderloin
Yesterday at 11:29 PM
Digital Pop Star Round 2: Hatsune Miku in 'Murrica
by Nick R
Yesterday at 10:33 PM
Driving on a metal grate
by y_p_w
Yesterday at 10:11 PM
Seem like antique old school guy dont give a rat .
by MetalSlug
Yesterday at 09:52 PM
lubegard power care 2 stroke oil and reconditioner
by fixit301
Yesterday at 09:08 PM
Home Solar Electric
by expat
Yesterday at 07:57 PM
Cost to service drum brakes?
by Hollow
Yesterday at 07:51 PM
Anybody spraying Fluid Film regularly?
by bullwinkle
Yesterday at 05:49 PM
Castrol Edge Syntec 0W-20, 0W-30 BC, 0W-40 GC
by SLO_Town
Yesterday at 05:43 PM
TGMO 0w20 6,074m 25,206m (2011 Tacoma)
by JerryBob
Yesterday at 05:22 PM
Newest Members
l1tech, greyghost, banderso, ovidiu, joeymaker
51648 Registered Users
Who's Online
15 registered (K23Turbo, 01_celica_gt, Fleetmon, GrtArtiste, 2 invisible), 535 Guests and 205 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
51648 Members
64 Forums
220986 Topics
3492752 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG

Page 1 of 2 1 2 >
Topic Options
#3073984 - 07/23/13 01:18 PM Changing ATF.
Viscosity Offline


Registered: 07/06/12
Posts: 8
Loc: Tx
I have a 2000 suburban. I have never changed the AT fluid. I have heard over the years that if you wait too long to change it you may as well not change it as when you do, the new fluid will cause problems with the seals. I have no idea whether there is any truth to it or not. Maybe some of you gurus can tell me whether or not there is any merit to this claim.

BTW, I am currently at 170K and having no issues with my transmission.


Edited by Viscosity (07/23/13 01:18 PM)

Top
#3073988 - 07/23/13 01:24 PM Re: Changing ATF. [Re: Viscosity]
randomhero439 Offline


Registered: 07/21/12
Posts: 1245
Loc: ohio
New fluid will clean all the sludge and varnish out of the transmission. It is very important to change the transmission filter during this process. Lots of high mileage transmissions fail after a fluid change, cause the filter was not changed. The cleaning action clogs the filter and starves the transmission for proper lubrication.

I would change it. But change the filter after you change the fluid.
_________________________
04 Accord EX V6 J30A4 6-speed MT: Pennzoil Ultra 5w-20 / PureONE
02 Civic LX I4 D17A1 5-speed MT: Pennzoil 10w-40 / Classic

Top
#3073991 - 07/23/13 01:26 PM Re: Changing ATF. [Re: randomhero439]
Viscosity Offline


Registered: 07/06/12
Posts: 8
Loc: Tx
Are you saying to change the fluid, let it run for a few days, and then change the filter or just do it all at once.

I had planned to change the filter.

Top
#3073995 - 07/23/13 01:30 PM Re: Changing ATF. [Re: Viscosity]
randomhero439 Offline


Registered: 07/21/12
Posts: 1245
Loc: ohio
Originally Posted By: Viscosity
Are you saying to change the fluid, let it run for a few days, and then change the filter or just do it all at once.

I had planned to change the filter.


Yeah pretty much what im saying. You could change the filter twice if you'd like, once when you start, then again maybe a week or two later.

IDK how hard it is to change trans fluid on your truck, whatever is feasible for your wallet and time.

Have you done the diff fluid in the truck yet?
_________________________
04 Accord EX V6 J30A4 6-speed MT: Pennzoil Ultra 5w-20 / PureONE
02 Civic LX I4 D17A1 5-speed MT: Pennzoil 10w-40 / Classic

Top
#3074012 - 07/23/13 01:48 PM Re: Changing ATF. [Re: Viscosity]
PhillyJoe Offline


Registered: 03/19/09
Posts: 522
Loc: PA
I would drop & clean the pan, change the filter and refill with Dex VI. Since you are only changing about half the fluid this way, I would do it again in 6 months.

Top
#3074023 - 07/23/13 01:59 PM Re: Changing ATF. [Re: PhillyJoe]
Donald Offline


Registered: 03/21/04
Posts: 13520
Loc: Upstate NY
Originally Posted By: PhillyJoe
I would drop & clean the pan, change the filter and refill with Dex VI. Since you are only changing about half the fluid this way, I would do it again in 6 months.


This plus installing a $20 Magnefine inline filter to catch all the loosened crud hopefully before it circulates too much.

One thing thing to remember is no flush or chemical can do a good job cleaning the filter. It needs to be replaced. Some like to say they can flush the ATF and by adding a chemical it will clean the filter too.
_________________________
2001 Jeep Grand Cherokee Laredo 4.0 - PP & M1
1999 Dodge Ram 2500 w/Cummins - Rotella T6 & M1
Amsoil ATF in both vehicles & Magnefine filter.

Top
#3074025 - 07/23/13 02:00 PM Re: Changing ATF. [Re: randomhero439]
NightRiderQ45 Offline


Registered: 03/24/08
Posts: 929
Loc: Houston, TX
Originally Posted By: randomhero439
New fluid will clean all the sludge and varnish out of the transmission. It is very important to change the transmission filter during this process. Lots of high mileage transmissions fail after a fluid change, cause the filter was not changed. The cleaning action clogs the filter and starves the transmission for proper lubrication.

I would change it. But change the filter after you change the fluid.
Baloney!!! This is not true at all. Most modern cars don't have a filter, it's a metal mesh screen that's called a filter.
_________________________
2002 Lexus GS300 120k My NEW baby
1998 FGY33 Infiniti Q45 257k....RIP


Top
#3074041 - 07/23/13 02:25 PM Re: Changing ATF. [Re: Viscosity]
wirelessF Online   happy


Registered: 10/04/07
Posts: 1256
Loc: Oahu, Hawaii
In the 4L60E I would recommend changing the filter since its a paper felt type. Since the pan has to be removed to change the fluid (some don't have drain plugs) might as well change the filter and clean out the pan.
_________________________
For racing or off-road use only!

Top
#3074057 - 07/23/13 02:38 PM Re: Changing ATF. [Re: Viscosity]
supton Offline


Registered: 11/09/08
Posts: 4875
Loc: NH
Be thankful you have a dipstick! "Modern" transmissions lack this basic feature. *grumble*
_________________________
2004 VW Jetta Wagon, TDI, 5spd manual, 300kmile, his
2011 Toyota Camry, base, 6spd manual, 81k, hers
2010 Toyota Tundra double cab, 4.6L, auto, 89k

Top
#3074070 - 07/23/13 02:45 PM Re: Changing ATF. [Re: Viscosity]
Kuato Offline


Registered: 10/23/05
Posts: 3133
Loc: Northeastern MT
Fresh fluid should help preserve your transmission for longer, and a pan drop and refill now, then again in 5-10k miles, then repeat every 30k after that should see you through.
_________________________
...Passion and persistence while most often associated with success are also essential ingredients of futility. - Mike Rowe

Top
#3074146 - 07/23/13 03:59 PM Re: Changing ATF. [Re: randomhero439]
Viscosity Offline


Registered: 07/06/12
Posts: 8
Loc: Tx
Originally Posted By: randomhero439
Have you done the diff fluid in the truck yet?


Nope. I need to do that as well.

Top
#3074236 - 07/23/13 05:30 PM Re: Changing ATF. [Re: Viscosity]
901Memphis Offline


Registered: 08/14/10
Posts: 5978
Loc: Northern Kentucky
How does the color look on the dipstick if you blot it on a white towel? Just curious. I recommend Supertech dex 6 at Walmart it's less than $4.50 a quart and pretty good stuff.
_________________________
1999 Ford Taurus 145k (Vulcan v6) - M1 High Mileage 5w30 | Fram Ultra XG 3600
2002 Buick Century 102k - PU 5w30 / Fram Ultra XG 3980 / Filter mag

Top
#3074245 - 07/23/13 05:39 PM Re: Changing ATF. [Re: NightRiderQ45]
RF Overlord Offline


Registered: 11/08/03
Posts: 3152
Loc: Cape Cod, MA
Originally Posted By: NightRiderQ45
Most modern cars don't have a filter, it's a metal mesh screen that's called a filter.
You can't make a blanket statement like that. Ford RWD vehicles with the 4R70W have a regular "media" filter. So does my sister's '08 RAV4...

How come no one ever advises installing a drain plug on transmissions that don't have one? I install them on every car I own and it makes doing regular drain & fills a lot quicker and a LOT less messy.
_________________________
Supercharged '03 Mercury Marauder - Trilogy Motorsports #61
PP 5W-30 / MC FL820S

Y2K Grand Marquis GS - daily driver
MC 5W-20 / MC FL820S

Top
#3074308 - 07/23/13 06:29 PM Re: Changing ATF. [Re: Viscosity]
tommygunn Offline


Registered: 01/27/11
Posts: 2774
Loc: usa
@RF, I always advise to install a drain plug, especially if there is an aftermarket pan with one available.

@OP and everyone else, I guess:
I thought these trucks had a drain plug.

If so, then you don't need to drop the pain. Just drain thru the drain plug.

Top
#3074488 - 07/23/13 10:34 PM Re: Changing ATF. [Re: 901Memphis]
Viscosity Offline


Registered: 07/06/12
Posts: 8
Loc: Tx
I checked it with a white rag and it's reddish in color.

Additionally, there appears to be a drain plug on mine. However, I'm planning on changing the filter so the pan is coming off. Any advice on putting the pan back on. Should I put it back on dry or use a sealant?

Top
Page 1 of 2 1 2 >