Guests - If You want access to member only forums on HSO. You will gain access only when you Sign-in or Sign-Up on HotSpotOutdoors.

It's easy - LOOK UPPER right menu.

Sign in to follow this  
Followers 0
WingDing2

Changing Tranny Fluid

45 posts in this topic

2003 Chev Silv 6.0 100,000 mi

I have been offered many options/prices whats the best way to go?

Flush no filter change. vs. Drain/filter change and Refill.

Note:Dealer service told me filter change not nessasary and not part of there flush for $160

Fluid has never been changed.

Share this post


Link to post
Share on other sites

I have never had a tranny flushed I just drop the pan and put in a new filter and gasket and fill with fresh fluid every 35000 miles and I have not had any tranney problems

Share this post


Link to post
Share on other sites

Yeah thats what I was thinking of doing (to save $$) but there is 100,000 on the fluid and I would like to clear out all the old stuff. Manf sug filter change @100,000

Share this post


Link to post
Share on other sites

I'm sure some of the tech guys will respond but I have a 99 Suburban 286,500 miles and the tranny has been flushed every 35,000 since new. Had the filter changed once at about 125,000 and still works as new. Just my .02 worth.

Share this post


Link to post
Share on other sites

At 60K in my 04 Silverado I had the tranny flushed as well as the pan dropped and a filter change. I'm planning on doing a fluid swap only at 100K by pulling the line off of the cooler and running the new fluid through. To be honest, the filter wasn't all that bad at 60K so I probably could have just done the fluid swap then. I did it for peace of mind.

Share this post


Link to post
Share on other sites

First of all, how long do you want to keep the vehicle?

A long time, then 100% fluid & filter. Use a synthetic, Amsoil or M1.

Share this post


Link to post
Share on other sites

I plan on having this truck until the doors fall off! or rather my Son will have it until then, It's been a really good truck. Really, change to a synthetic after a 100k of Dex3? I am a proponent of Amsoil and have used it be before but I think I'll stay with the Dex3. After reading what everyone here suggested what I should do, I think were going to drop the pan today and change the filter and refill then sometime this week or next get a flush. Anyone have a better suggestion? I've shopped around and I can get a standard flush for a $100 bucks.

Share this post


Link to post
Share on other sites

from what I have heard from some people I know flushing a traney every 35000-50000-miles is a good idea but I have herd some people have had problems if they flush a high mile traney because it brakes all the junk lose and causes problems with the trans after that just my imop

Share this post


Link to post
Share on other sites

Do it yourself procedure to change all the fluid in the transmission:

1. Drop the pan, replace the filter. If equipped with a reusable gasket (metal shim/rubber coated) wipe clean carefully, do not let it get bent and reuse. Refill the pan quantity (typically 4 to 6 quarts most pickups). Do NOT start the engine yet.

2. Disconnect the cooler line - run both ends to a collection bottle (I use clear vinyl tubing available in various sizes at any home supply store). Have your assistant crank the engine and stay behind the wheel. Fords and GMs tran in park, Dodge rear wheel drive tran in neutral. While fluid is pumped out one of the lines, refill through the dipstick tube with fresh fluid. After about 6 quarts pumped out or the fluid color changes to the fresh fluid shut off the engine. Reconnect the cooler line. Check the fluid level. Test drive shifting through all gears a couple of times, come back and recheck fluid level.

This procedure does a better job than the flushing machines when they don't drop the pan and replace the filter!

Share this post


Link to post
Share on other sites

Good info oilman. Moparman I know what you mean, I have experienced the exact situation. I have a honda now and the dealer service rep told me they recommend a drain and fill the 4 quarts they get out with a simple plug drain every 35k which is enough of a price hit with that special Z something atf fluid that honda's need. apparently a force-flush type thing you get at the quicky lube is tranny suicide cry

oilman any recommended d.i.y service for the "unique" honda trannys?

Share this post


Link to post
Share on other sites

Thanks Oilman for the info! I wish I would have waited until today to do the job. We drained the pan (it has a plug) then dropped the pan, changed the filter (it was due) cleaned everything up, put it back together and refilled the 5 quarts we drained. I then started the engine, went through the gears for 3 sec. each (as instructed in owners manual) and drove it until it got warm then rechecked level and was just a little low. topped off and called her good. This system is 15 quarts I have only replaced 5 1/2 quarts any suggestions other than a service center flush. Thanks!

Share this post


Link to post
Share on other sites

Oilman,I just want to understand the procedure. Fill through the dipstick tube while pumping out through the cooler lines? Both not just one? I guess the reason I ask is the fluid is pretty slow going through the dipstick tube and I would assume it's movin' through the cooler lines. Thanks

Share this post


Link to post
Share on other sites

Yes, fill through the dipstick tube.

Cooler lines - I am yet to find a reliable book to tell which is flowing which direction. I normally would just disconnect one at the most convenient location and put a tube on both open ends - because you never know ahead of time which is coming from the pump and which is return. Some vehicles it might be easier to disconnect both lines.

With this procedure you will only leave a pint or less behind.

Share this post


Link to post
Share on other sites

Iron Cowboy -

Yes, many Hondas and other Asian transmissions don't have a pan as do most all American and European automatic transmissions. Many of these do have a drain plug, but only drain a small amount, some less than 2 quarts.

But, they do have easy to access cooler lines. Drain what you can from the drain plug first, then use the cooler line to pump out and do most of the job.

However, there are now a number of vehicles with no dipstick tube, or if they have a tube, don't have a dipstick for the tube. To service any of these is NOT a do-it-yourself job.

Share this post


Link to post
Share on other sites

Are shop did it this way for years, some salesman came in and sold our service manager a $4000 flushing maching, that did the same identicle thing as just using a couple hoses and a bucket. We never used it, and the service manager got mad at us becuase we wouldnt spend an extra half hour setting this overpriced bucket up.

Just a note, some flushing machines have pumps in them, and would clean better then this one, that just used the vehicles tranny pump,

Share this post


Link to post
Share on other sites

The more and more people I talk to, you hear about flushing machines causing Tranny suicide in older "high mileage" vehicles.

I would assume that the machines with pumps in them are more agressive than just using your own tranny's pump?

I will just use the "do it yourself" method primarily cuz I cant afford the $120 flush. That's the times right now.

Share this post


Link to post
Share on other sites

a buddy of mine always drained,replaced the filter, and flushed like oilman said. He did it every 35k miles, he put many miles on his trucks? He never had a tranny fail and most were at or near 500k miles when he got rid of them. he was totally anal about his trucks but it always paid off

Share this post


Link to post
Share on other sites

Put a deep pan with a drain plug on my Tahoe when I bought it five years ago.

I drain & fill two times, and the third time I drain, drop pan, change filter & fill. Do it every year in spring. Fluid remains clean and transmission shifts effortlessly. Engine runs cooler as well since I trashed the OEM pan for the deep after market pan.

Share this post


Link to post
Share on other sites

Not to be the bearer of bad news, but the way oilman explained it will work, but certainly not as well as using a T-tech Machine. This machine displaces all the fluid from Transmission, torque convertor, lines, Trans Cooler. It exchanges 100% of the old fluid, it also works with the natural flow of your trans. pump and will NOT over or under pressurize the system. Also you should never change the filter before you change the fluid or you are just running dirty fluid through your new filter which is not what you want to do. I run a Quick Lube in Ham Lake and we only charge $79.99 for a COMPLETE fluid exchange, I dont know where u were going that is going to charge u $150, but I would stop going there my friend.

Share this post


Link to post
Share on other sites

Does $79.99 cover all fluids including dexron VI and the other synthetics that the imports use?

Share this post


Link to post
Share on other sites

As of right know it does, its a special promo I am running for the whole month at my store. It covers atf+3, atf+4, DexVI, merconIV, SLF, Mitsu diamond III, etc. The only ones it does not cover are Mercon SP and any VW/Audi Trans. fluid. But thats beside the point,his question was for a Dex3/Mercon fluid, and lets be honest Dex3/Mercon Trans. fluid is $5.15 a gallon. A 4L60E holds 12-12 1/2 Qts. So thats $16 bucks in product, if your paying any more than $80 - $85, for a Dex3 trans. service your getting ripped off

Share this post


Link to post
Share on other sites

Not to be the bearer of bad news, but the way oilman explained it will work, but certainly not as well as using a T-tech Machine. This machine displaces all the fluid from Transmission, torque convertor, lines, Trans Cooler. It exchanges 100% of the old fluid, it also works with the natural flow of your trans. pump and will NOT over or under pressurize the system. Also you should never change the filter before you change the fluid or you are just running dirty fluid through your new filter which is not what you want to do. I run a Quick Lube in Ham Lake and we only charge $79.99 for a COMPLETE fluid exchange, I dont know where u were going that is going to charge u $150, but I would stop going there my friend.

I have a question for you. If I pull off the cooler hose after it leaves the cooler, then place that end into a bucket, fill the fluid into the filler neck, how is this not flushing the whole system, besides the 3 foot of steel line from the cooler to the trans? There cant possibly be much dirt in a small section of a steel line.

Share this post


Link to post
Share on other sites

If you think it does the same thing, then thats cool. I didnt say it wouldnt work, I just said with a T-tech machine your vehicles pump creates the exchange, eliminating the possibility of over- or under pressuring the tranny. and also eliminating the possibility of over- or under filling the system.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0



  • Posts

    •   Stayed home for the 4th this year, was amazed how quiet the cities seemed to be. "Is everybody up north?"
    •   I sure like the sites your old campground kept open for weekenders. Best spots in the campground if you ask me.    
    • so leech, does your campground have festivities functions for there permy site people? ours had a big fish fry on the fourth with a little parade. they do a golfing event to. i heard they finally got some decent playground equipment for kids. there theory was theres fishing. they used to do a pot luck with a theme german, mexican..bleah blah.....but that required work and planning from the owners. took away from the beer drinking! 
    •   I have noticed that trend at seasonal campgrounds too. 20 some years ago when we started camping seasonal sites used to be full of folks 60+ but now it seems that there are a lot of young families in these sites.    The other trend I noticed is that lot rental prices have gone through the roof since then. 
    •   Well in the 12 years we have been at this campground it went from mostly old folks where if your Walker wheel was squeaking someone would run out with a can of WD-40 to stop the noise! Now a lot of young families with kids. Most of the year it's not to bad, but the Holidays can get a little crazy with the golf carts and beer flowing!   I don't let folks bother me much, I have two young grandsons so their in the mix!
    • I have definitely come to the conclusion that on those big 3 day holiday weekends its way more quiet and peaceful if i stay put at home.................even up north. hey i can have a fire and have cocktails at home too!!!!!!! the weekends to go are weekends prior to and after them big weekends!!!!!!!!!!
    •   Pretty much the same on enforcing some of the rules. The 4th was a Zoo and I'm sure the managers head was spinning trying to keep track of who all the kids running belonged too!
    • well it didnt help our family has a cabin up in itasca county and have had it since 1965. the camper took time away from there. granted the camper was 30 minutes from home the cabin 3 1/2 hours but there is agood city block of woods between us and the neighbor.............and we have noone on the other side. i dont mind a little socoilizing but that peace and quiet is right up my ally.   so leech does your park charge extra for additional company not your immediate family? the campground we were at did, but they didnt enforce it fairly. some were forced some got to slide. oh and there were alot of other issues i got fed up with!!!!!!!
    • No ones making fun leech. Just made a statement. I've never seen one like that before. I've seen the hand ones curved, but not the powered one. Guess it could be like the hand one. I could be wrong. Be interested to see if they sold one like that, or someone put a power head on it. I'll let you take over now.
    • Before you make fun of guys Stuff being bent. Check out the picture on this link if it works. It sounds like they are a bit of a rare hand auger.   Jiffy® Hand Drill 6" Replacement Blades - 59219, Ice Augers at ... https://www.sportsmansguide.com › Fishing › Ice Fishing › Ice Augers Drill more holes with less effort! Jiffy® JetTM Hand Ice Drill... VALUE PRICE ! The easiest, most effective hand ice drill on the market! The flanged handgrips ..   https://www.sportsmansguide.com › Fishing › Ice Fishing › Ice Augers
  • Our Sponsors