To flush or not to Flush - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 02-17-2008, 01:20 AM   #11
Member
Posts like a V-Tak
 
Join Date: Jan 2008
Location: IL
Posts: 30
Thanks: 0
Thanked 0 Times in 0 Posts
fast68 is on a distinguished road
Default

gamble

luck of the draw

some ppl prefer flushes

some ppl prefer pan drops

i prefer pan drops but that is all that ever used to be recommended to do

so hmmm

i used to work in a lube shop where we had a trans flush machine, a decade ago for a year or two

i saw watched helped with alot of trannies flushings with it
i remember it was 50 bucks back then for a flush and was pretyt easy you just take apart a cooler line fitting almost always at the radiator tank

the shop owner always said that the filter was just a screen and you dont need to change it,
i remember him telling so many ppl this

but then he was no real mechanic and was employey by pennzoil(owned a franchise shop)

so..



but regardless,,, i never heard of any trouble from anyone regarding their trans after a machine flush job

so i dont know

im skeptical and like to change this screen that is actually technically named a filter

so thats what i do on my own rides and always have

ive seen so many filters that had gray slime(metal wear) and a few small aluminum bits and black grime(clutch disc material or rubber seal material) in them that its a good thing i did drop the pan on them and do it "right"

the 92 needs a pan drop like yesterday the fluid is starting to get dark and it does smell fine still but i already know there will probably be a considerable amount of black/gray collected in the pan and filter




each to their own
fast68 is offline   Reply With Quote
Old 02-17-2008, 10:34 AM   #12
Senior Member
True Car Nut
 
Join Date: Mar 2004
Location: Ames, Iowa
Posts: 3,066
Thanks: 0
Thanked 1 Time in 1 Post
bill buttermore is on a distinguished road
Default

Quote:
Originally Posted by willwren
I've never seen a trans fail from the old wive'* tale about flushing.
This "old wife" has seen two transmissions that were working perfectly fail within a month after a professional flush. There is no proof, of course, that they were not going to fail anyway, but trannys usually give some early indication. As a result of my personal observation, and scores of problems documented nationwide, I am simply not willing to take the chance of flushing the fluid in a transmission that is working well. I have never damaged a transmission by dropping the pan to drain half of the fluid. And, I know my pan is clean when I put it back up.

If you decide to ignore old wive'* tales, I suggest you make certain that the people at the place you take your car to do the flushing have a reputation for integrity and competence. Jiffy Lube (with its own web site of horror stories: http://www.jiffylubeproblems.com ) would NOT be such a place.
bill buttermore is offline   Reply With Quote
Old 02-17-2008, 12:21 PM   #13
Senior Member
True Car Nut
 
Join Date: Jul 2004
Location: Grand Rapids, Mi
Posts: 5,656
Thanks: 0
Thanked 0 Times in 0 Posts
Archon is on a distinguished road
Default

I've had mine, as well as a few other cars, flushed without issues. However, it normally isn't needed. Dropping the pan, and replacing the fluid and filter is usually all that is needed. I do some type of fluid work on mine every year. Sometimes, it is as simple as pumping some out (can get about a gallon) with a pump, and replacing that.
Archon is offline   Reply With Quote
Old 02-17-2008, 12:23 PM   #14
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

I know flushes extended the life of both of my transmissions. Particularly in failure mode. Great improvements each time. In discussing it with my trans builder, he stated a flush was a good thing, and only bad when done wrong or by an incompetent.

Anyone that takes their car to Jiffy Lube should search this Forum before going back.

Transmission flushes, when done properly, use your OWN trans pump to complete the process, which means no 'foreign' force is applied to the trans whatsoever. The old fluid is pumped into the machine on the bottom side of a piston in a clear (acrylic) chamber, and this forces the piston upwards. The top portion is filled with new fluid.

Think of it as a blood transfusion while you're still bleeding, but your own heart is powering both the bleeding and the filling.

There are other types of machines out there, but every trans shop (good shops that is) will tell you this is the only type of machine to use. My flushes run about 80 bucks these days.
willwren is offline   Reply With Quote
Old 02-18-2008, 02:19 AM   #15
Senior Member
Posts like a Camaro
 
Join Date: Aug 2004
Location: Chi-Town
Posts: 1,116
Thanks: 0
Thanked 0 Times in 0 Posts
Boreas is on a distinguished road
Default

I drop my pans, I dont trust my car to be flushed by anyone because you never know and I dont want to gamble with a tranny rebuild.
Boreas is offline   Reply With Quote
Old 02-18-2008, 09:55 AM   #16
Senior Member
Posts like a 4 Banger
 
Join Date: Dec 2005
Location: Fort Wayne, IN
Posts: 119
Thanks: 0
Thanked 0 Times in 0 Posts
bsan63 is on a distinguished road
Default

What about adding a Lucas Transmission Fix (that thick stuff) after changing the fluid. Does that do anything in the long run?
bsan63 is offline   Reply With Quote
Old 02-18-2008, 11:12 AM   #17
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

IMO and from my experience, Lucas is good, but only in one scenario. When you're already having problems that are causing excess heat, and the heat causes viscosity breakdown in your fluid.

On a 93 and older, the only way to know is by adding a sensor and gauge (like I did a long time ago). 94 and newer, you need a scantool. Or a gauge.
willwren is offline   Reply With Quote
Old 02-18-2008, 11:51 AM   #18
Senior Member
Certified GM nut
 
wakefieldl's Avatar
 
Join Date: Dec 2005
Location: dekalb illinois
Posts: 1,916
Thanks: 0
Thanked 0 Times in 0 Posts
wakefieldl is on a distinguished road
Default

Quote:
Originally Posted by bsan63
What about adding a Lucas Transmission Fix (that thick stuff) after changing the fluid. Does that do anything in the long run?
my ears are ringing i new i heard my name



check siggy

i would say flush it and hope it turns out ok
wakefieldl is offline   Reply With Quote
Old 02-21-2008, 10:58 AM   #19
Senior Member
Posts like a Supercharger
Thread Starter
 
Join Date: Jan 2008
Location: Orlando Florida
Posts: 182
Thanks: 0
Thanked 0 Times in 0 Posts
lunchboxx is on a distinguished road
Default

Thanks for all the input guys. I think i will wait til next month and then get it flushed. Once again, this is PURELY a PREVENTATIVE step as there is nothing wrong with the transmission since the rebuild by AAMCO 2 years ago...
lunchboxx is offline   Reply With Quote
Old 08-31-2008, 04:45 PM   #20
Member
Posts like a V-Tak
 
Join Date: Feb 2008
Posts: 41
Thanks: 0
Thanked 0 Times in 0 Posts
rkpatt is on a distinguished road
Default

I think flushing the transmission every 20-30K mi is great but isn't important to drop the pan change the the filter , clean the pan and pan magnet on some sort of regular PM schedule ? Particles can get trapped in that filter and debris settle in the pan . Any recommendation on how often to do a ban drop if you you flush the transmission every 20-30 K miles ?


BTW , other the years I have add a bottle of Lubegard red and have found that seems to help extend the life of the AFT ( stays original color and odor longer ).

-Thanks

Last edited by rkpatt; 08-31-2008 at 04:49 PM.
rkpatt is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
GXP transmission flush, & flush in general SAMzGXP General GM Chat 32 07-19-2011 06:41 PM
02 SSEi w/88K tranny flush or not? NWASSEi 2000-2005 4 07-06-2009 10:18 PM
tranny flush or not? nicklikesmilk General GM Chat 11 04-01-2007 03:50 PM
not good. NOT GOOD. (hit and run, not bad-BAD, but not good) repinS General GM Chat 13 11-26-2004 11:35 AM
Coolant Flush Drifter420 1992-1999 9 10-17-2002 01:56 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 02:51 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.