Recent Topics
comparing wix 1334 vs 51182
by Provi
04/17/14 08:27 PM
Synthetic Oil in a GM 3800 ?
by Merkava_4
04/17/14 07:54 PM
My Blackberry Z30 review.
by KrisZ
04/17/14 07:45 PM
Strange Computer Problem
by ZeeOSix
04/17/14 07:27 PM
PYB5w20, 11'Sonata, 3k miles UOA
by Sonataman
04/17/14 07:08 PM
Pennzoil Platinum 8150 miles Cruze 1.4
by mwball0
04/17/14 06:55 PM
overthinking?
by BlueOval
04/17/14 06:00 PM
2015 KIA Sedona
by Azeem
04/17/14 05:10 PM
Rotella 15w40 in an oil burner/leaker
by Stang40
04/17/14 04:59 PM
First oil change / Pacific Hydrostar 6.5HP
by bubbatime
04/17/14 04:10 PM
Toyota WS Transmission Fluid
by 06AllAmerican
04/17/14 04:06 PM
Group III vs Group IV at 400C
by G-MAN
04/17/14 03:41 PM
Newest Members
Northwestil01, Coor, jeff2point5, Pi1, navynuke
49602 Registered Users
Who's Online
122 registered (1345, 123Saab, 2009Edge, 01_celica_gt, AandPDan, 9 invisible), 1916 Guests and 225 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
49602 Members
64 Forums
212014 Topics
3323121 Posts

Max Online: 2551 @ 04/05/14 01:28 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: 500
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: 12611
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 - Rotella T6 & 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 Offline


Registered: 10/04/07
Posts: 1163
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: 3704
Loc: NH
Be thankful you have a dipstick! "Modern" transmissions lack this basic feature. *grumble*
_________________________
2004 VW Jetta Wagon, TDI, 5spd manual, 293kmile, his
2011 Toyota Camry, base, 6spd manual, 67k, hers
2010 Toyota Tundra double cab, 4.6L, auto, 82k

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


Registered: 10/23/05
Posts: 2376
Loc: Southern Canada
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.
_________________________
04 Jeep Wrangler 2.4 MT 182k
13 F150 4x4, 5.0, 13k

both on Amsoil

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: 3587
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.
_________________________
'99 Ford Taurus 145k (Vulcan v6) - Current Fill = M1 HM 5w30 | FL400S
'02 Buick Century 98k (3.1 v6)- 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: 2913
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
M1 5W-30 / MC FL820S

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


Registered: 01/27/11
Posts: 2324
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 >