Why You Should NEVER FLUSH YOUR TRANSMISSION FLUID!!

picture this you drive a 1995 GMC Suburban it's 24 years old and has 78,000 original miles the trans fluid looks like this but it could look like this do you flush it comment below hello friends I'm Jimmy and you're watching one Road in this video I'm gonna flush my old crusty original transmission fluid with this brand new cherry red synthetic stuff the is a 4l60e let's get into it alright for the transmission fluid I'm gonna be using this Valvoline Maxx life fully synthetic fluid this fluid is rated for Dexron 3 and that's exactly what this truck calls for I'm also going to be using this clear vinyl tubing it's a 10 foot section with a half inch outer diameter and a 3/8 inch inner diameter as for the filter and gasket I picked up this wicks unit from my local auto parts store here you can see the new filter seal that we actually won't be using but if you're wondering what they look like well this is it here's an up-close view of the filter this 4l60e transmission comes with either a shallow pan or a deep pan in my case it's a shallow pan and this is the filter for it this kit also includes a rubber gasket the first step we're gonna take is actually flush out the old transmission fluid if you look over on the top corner of the passenger side of the radiator you'll see this hard line threaded right into it this whole passenger side of the radiator is actually a transmission cooler there you can see the inlet in the bottom and the outlet comes out the top this truck in particular not only has the radiator attached cooler but there is also this external cooler we could take off the whole front grill of the truck and drain the fluid from the outlet of this external transmission cooler however I want this to be as easy as possible so we're not going to do that back to this hard line coming out of the top of the passenger side of the radiator we're gonna go ahead and take this out I did spray it beforehand with wd-40 so cracking this thing loose is no problem in order to not have any leaks you're gonna have to thread this clear vinyl tubing into that fitting you literally have to apply under pressure and twist it at the same time just like you're threading in a bolt and before long it will be threaded in there nice and tight then this line just runs right down to your catch pen this next step is not for the faint of heart matter in fact this whole process is not for the faint of heart what we have to do here is actually start the vehicle and let the transmission do the pumping what's literally happen right now is the transmission is pumping all that fluid through the cooler in the radiator and out this hose it's going right into our catch pan and we're gonna keep this going until we start to see bubbles once you see the bubbles shut the car off immediately all right look at what we got out of this transmission so far this is a little over 5 quarts it started blowing bubbles which means there was no fluid left in the transmission pan but this stuff looks like mud look how disgusting this is now I'm gonna drain this catch pan into another because we're gonna have to do this process again with the transmission pan being fully empty we're gonna pull out our transmission dipstick this is also where we're gonna pour in our brand new fluid since we pumped out about five quarts I'm gonna go ahead and pour in four quarts of brand-new fresh fluid this should be just enough to let that transmission pump do its job and pump some more old fluid out into my catch pan and here we go again I started the truck I waited a few moments for that pump to pick up that new fluid and begin the pumping process this pumps more of that old fluid out of the system again I'm gonna keep this going until I start seeing bubbles and here you can see the benefit of using this clear vinyl tubing the old fluid has now mostly been pumped out as you can see through the tube the color is no longer a brown mud but a respectable red now I do admit this process although it's called a flush does not get every ounce of the old fluid out there's still fluid caught up in that torque converter and I'm sure in other places within the transmission but for the most part we're pumping out as much of the old garbage as we can all right with the flush done we're gonna go ahead and jack up the truck and put it up on jack stands I'm also gonna chalk off the rear wheels as well as setting the parking brake here you can see I'm using not only two six ton jack stands as my main jack stands but I also have two three ton jack stands backing those up now for the hard part looking up at the transmission pan you can see just a few of these 16 total bolts that we have to take out in my case I'm going to be using a ratchet and extension and a 13 millimeter socket just start grinding away and get these suckers loose on one end of the and you're gonna want to leave the bolts fully tightened while you take out all the rest the object here is to not let that pan fall so we're even gonna leave a bolt on the other side loose but in as I take these bolts out I'll be using this cardboard template by doing this I can ensure that I'm putting the same bolt back in the same hole when we're ready to button this thing back up all right so I have most of the bolts removed except for one up front and a couple in the back this pan is ready to be cracked loose I'm taking out this last front bolt that was holding it up while keeping pressure on the pan and I'm cracking it open the pan is now being held up by these few loose bolts on the back end I also have a drain bucket ready to go keeping pressure on the pan remove the last couple of bolts alright all the bolts are out guys this is the scary part keep your head and face out of the way and try to drop this pan as evenly as possible oh gosh oh I almost just took a bath in transmission fluid wow that was close what a mess it is now time to take out the old filter the best way to do this is to simply just rock it back and forth while pulling down it should just pop right out well here it is an up-close-and-personal look of the 4l60e sands drain pan well this next part is definitely not recommended unless you know what you're doing I'm taking my torque wrench and I'm torquing these bolts down to eight foot pounds or 96 inch pounds some of them were very loose and some not so much the next step is to make sure that the gasket mating surface is clean and clear of any sort of debris or dirt all right guys so I've chosen to leave in the old filter seal I didn't bother trying to remove it because it is quite a pain in the butt so I'm gonna go ahead and tap in my new filter which is pre lubed with just a very very small amount of grease now that that's all done we can focus our attention on the drain pan looking at this drain pan we can see that it's actually not that bad we do have some old gasket material that we will have to remove but look at this magnet guys is precisely why you should at least be dropping the pan and doing a filter change this magnet contains all of your metal shavings that come off of the transmission and clutch plates with age this is basically metal dust that has been caught by the magnet to remove this old gasket material I'm gonna take this razor blade and very carefully peel it off now I'm gonna take my clean rag and clean out the inside of the pan including that magnet so far this pan is looking great now I'm gonna take this scotch brite pad and clean off any remaining debris the gasket mating surface of this pan should be clean bright shiny metal lastly I'm gonna spray this thing down with some brake parts cleaner whoa guys look how clean this pan is looks like brand-new and the magnet is spotless now I'm gonna test fit my gasket and it looks like everything is fitting perfectly the gasket looks good and all the holes line up exactly in order to hold this gasket in place while I reinstall this pan I'm gonna go ahead and slide just a couple bolts in right through the gasket this gasket holds the bolts tight enough to keep them there which in turn holds the gasket in place now that I have four bolts here holding the gasket in place I'm gonna go ahead and reinstall once you carefully fish that pan back up to the transmission trying not to bump anything so you don't have any debris falling into the pan you can start tightening those bolts by hand and once those four bolts are hand tight we can refer back to our cardboard template again this ensures that we're putting each bolt back into its original hole once I've got every bolt finger tight I'm gonna take my extension and thirteen millimeter socket and again go over them by hand next I'm gonna take my 3/8 torque wrench and begin the process of tightening in a crisscross pattern this is gonna take a couple of passes with each pass tightening a little more make sure you're going in somewhat of a crisscross pattern this ensures that the drain pan is being tightened evenly thereby applying even pressure to that gasket after a couple of passes on every bolt it should be tight enough to start actually reaching torque which in my case is 18 foot-pounds with everything buttoned up underneath and the truck down off of its jack stands we're going to remove this clear vinyl tubing then we can go ahead and simply reinstall this hard line the next step is going to be to refill this transmission with fluid do not start your car until you refill it with fluid in total we've pumped out roughly 10 to 12 quarts of fluid and so we know we're gonna have to replace all that fluid with roughly the same amount I'm gonna start with 8 quarts I'll start it up let it idle and get warm and check the level from there with the truck idling and up to operating temperature I can now pull the dipstick and check my levels and so far everything is looking good all right guys here's a little bit of a bonus let's take a look inside our original transmission filter I'm just gonna use some tin snips here to try to cut this thing open gosh guys this is actually harder than it seems got it so here is the filter media it seems to be one piece that's folded over on itself let's go ahead and pull it out and look inside oh my gosh guys look at all this metal these are all metal shavings which most likely came from this during its break-in period this is precisely why I wanted to get this filter and fluid changed immediately then there really is a lot of metal in this filter all right let's take a look at the fluid that now resides inside of our 4l60e look at this stuff nice bright red brand-spanking-new fully synthetic transmission fluid and now let's take a look at the stuff that was in there for the last 24 years here's the new stuff and here's the old stuff and here they are side by side would you have done what I did comment below and let me know make no mistake about it this is no easy task first of all you're dealing with transmission fluid and who wants that all over their hands and face second that pan has 16 bolts in it and is still full of fluid even after flushing it all out so when you drop that pan it's highly likely that you learn right then and there that that beautiful cherry red transmission fluid does not taste beautiful or like cherries wow I am stoked though I finally did it I conquered that mountain that is a transmission fluid flush and filter change the last step is to drive the truck and to see if that is gonna blow up because we all know the school of thought that says hey never ever flush your old transmission fluid it can slipping it can cause your transmission to completely blow up I mean the list goes on in my case I just chose to change it I love this truck and I want to keep up with the maintenance I can't stand to know that there is 24 year old transmission fluid floating around in there so I guess time will tell hey if it blows up at least I'll have another video where I put in a brand new transmission hopefully this video was entertaining for you if it was please hit that thumbs up and also if you're not a subscriber what are you waiting for subscribe I'm Jimmy and this is one road

Channel: 1ROAD

Views: 2,275,166

Keywords: Transmission fluid flush, 4L60E Fluid Flush, 4L60E, 4L60, GM Transmission Fluid Flush, How to transmission fluid flush, How to flush transmission fluid, Transmission, Car, Truck, Automotive, Transmission Fix, Hard Shift Transmission, Hard Shift

Id: xgVFvssMY4g

Length: 11min 57sec (717 seconds)

Published: Sat Apr 06 2019