To Change or Not To Change Transmission Fluid...? - S-10 Forum
 
LinkBack Thread Tools
post #1 of 6 Old 09-30-2009, 04:15 AM Thread Starter
Registered User
 
MrGoodwrenchGM's Avatar
 
Join Date: Oct 2007
Posts: 102

User is: MrGoodwrenchGM is offline
To Change or Not To Change Transmission Fluid...?

I have an '88 S10 Blazer with a 700R4 transmission. It has almost 200,000 original miles on it, and I'm not exactly sure how many times the trans fluid and filter have been changed. My fluids are still slightly red with some mid brown coloring. I've heard from the average jobber to either change it or leave it alone, about a 50/50 split, but I thought it wouldn't hurt to hear from a ASE certified tech if possible. I have had no previous problems with my trans, and I personally haven't changed the fluids in a bout 70,000 miles. My truck is a daily driver, and by no means a play toy at all. Any professional advice is greatly appreciated.

MrGoodwrenchGM is offline  
Sponsored Links
Advertisement
 
post #2 of 6 Old 09-30-2009, 12:51 PM
under construction
 
sdimewisher's Avatar
 
Join Date: Jan 2006
Age: 30
Posts: 138

User is: sdimewisher is offline
Send a message via AIM to sdimewisher
Re: To Change or Not To Change Transmission Fluid...?

im not ASE cert. but I can tell you one thing...change it...dont flush it....and definately add a quart of old fluid with the new

the problem is that tranny fluid is a detergent....if youdon't change it regularly, the tranny depends on it to work. the clutch plates crack/peel over time, and rely on the "grit" of the old tranny fluid. Adding new fluid to an old tranny with cracked/peeled clutch plates = epic fail



Put your seatbelt on. Im gonna try somethin
sdimewisher is offline  
post #3 of 6 Old 09-30-2009, 01:42 PM Thread Starter
Registered User
 
MrGoodwrenchGM's Avatar
 
Join Date: Oct 2007
Posts: 102

User is: MrGoodwrenchGM is offline
Re: To Change or Not To Change Transmission Fluid...?

Thanks for the tip sdimewisher. I've heard to just change the filter, some say leave it alone completely, and some even say change NOW. I realize it may be too late to completely start out with fresh fluids, but I was always been afraid to add even a drop or two more of fresh fluids due to possible catastrophic failure as a result of my neglegence. However, I guess the only thing left to do is like you said, mix old with new, and hope for the best.
MrGoodwrenchGM is offline  
post #4 of 6 Old 09-30-2009, 03:35 PM
Registered User
 
Join Date: Jul 2006
Location: Where men act like men and don't cry
Age: 47
Posts: 5,065

User is: MadMikeZ28 is offline
Re: To Change or Not To Change Transmission Fluid...?

Don't be fooled. ASE techs are not that great. Any one can go out and basically buy that cert just like they did.

I agree with sdime.
You are having problems with your tranny, it has not been maintained in a long while, you change to fresh fluid it will go out faster. It can, and most likely will still go out. You're not going to stop it from that. But you will slow it down from that.
Prepare for another tranny.
MadMikeZ28 is offline  
post #5 of 6 Old 09-30-2009, 03:46 PM
Old School
 
98SonomaMan's Avatar
 
Join Date: Aug 2003
Location: Lakeland Fl
Age: 32
Posts: 226

User is: 98SonomaMan is offline
Send a message via AIM to 98SonomaMan Send a message via MSN to 98SonomaMan
Re: To Change or Not To Change Transmission Fluid...?

If it's not that brown, I don't think it's that dire fella's.

Hey, he could always change it and then throw in a handful of sawdust.

(I kid, don't do that)

1993 Chevy S-10
4.3L V6
265K miles ()
Had a 1998 shaved ext cab, sold it a few years ago, just getting back into the game.
http://www.cardomain.com/ride/3384452
98SonomaMan is offline  
post #6 of 6 Old 10-01-2009, 04:36 AM Thread Starter
Registered User
 
MrGoodwrenchGM's Avatar
 
Join Date: Oct 2007
Posts: 102

User is: MrGoodwrenchGM is offline
Re: To Change or Not To Change Transmission Fluid...?

Thanks to everyone for all of your responses. The fluid really isn't that bad right now, and the trans runs just fine (knock on wood.) The only reason I'm really concerned is because this truck is my baby, and I'm very anal about taking care of it. I know I've been slacking on the trans fluid, I'm just not sure if I should just let it ride til it dies or change the fluids and hope for the best. But assuming the motor might only last another 100k if I'm lucky (again, runs just fine) I should probably just let it ride, and do a motor/trans swap when it dumps on me. But I'm no mechanic, I just know enough to fix the basics.
MrGoodwrenchGM is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the S-10 Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address.


Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome