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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > DIY Guides > Very easy way to add transmission fluid.



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      04-16-2019, 08:50 AM   #1
JonEQuest
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I know I'm not the first guy to do this but I wanted to share my easy method for getting transmission fluid uphill and into your transmission. This would also work for any other fluid of course.
You will need some sort of air compressor. You could even use one of those little 12-volt ones to pump up your tire if you rig a little air hose to it.
You also need about 3-4 feet of plastic or rubber hose but clear works best so you can see the fluid travel.

Take the lid off of one of your oil bottles and drill two holes in it big enough to jam two pieces of your hose into but snug enough so that it's fairly are tight. 1 hose should be long enough to reach the bottom of the oil bottle. the other hoes should only go in about an inch or so past the cap. Attach your air compressor with a blower that you can trigger to the piece of tubing that only goes into the cap about an inch deep. The other hose that goes all the way to the bottom of the oil bottle should be long enough for you to set the bottle on the ground or something stable, and long enough to go up and into the transmission fill hole at least a few inches. This is very important, set your air pressure down about as low as it will possibly go. I won't need more than a few pounds of air to push fluid. if you try to do too much pressure thinking you're going to push the fluid quickly you are very likely going to explode the oil bottle blowing oil all over your face and everything else. as you squeeze the blower Chuck trigger slowly the bottle will expand like a balloon. Hold even BUT LOW pressure and you will start to see fluid flowing up the hose and into the transmission. I advise you to only use the least amount of pressure that will get the oil flowing up the tube. Remember those plastic oil bottles we're not meant to hold pressure and could easily rip open at the seam. when the bottle is empty it's best to slide the tube out of the transmission otherwise when you release pressure it will siphon the fluid back down into the bottle. I simply held the cap steady and spun the bottle off of the cap. Then I spun a new full bottle on to that same cap and started the pressure again. I took my time in this worked perfectly and I didn't spill one drop of fluid on the ground. When you know you're close to capacity go slow so you don't overfill it and have to wait for a bunch to flow back out the fill hole.[IMG]undefined[/IMG]
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Last edited by JonEQuest; 04-16-2019 at 09:34 AM..
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      04-16-2019, 09:16 AM   #2
TGTIW
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Well it's obviously easier to add transmission fluid when the car is upside down like that..
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      04-16-2019, 09:18 AM   #3
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Quote:
Originally Posted by TGTIW View Post
Well it's obviously easier to add transmission fluid when the car is upside down like that..
LOL
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      04-16-2019, 09:19 AM   #4
9krpmrx8
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Next thread: "Very Easy way to rotate and post pictures",
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      04-16-2019, 09:20 AM   #5
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Quote:
Originally Posted by 9krpmrx8 View Post
Next thread: "Very Easy way to rotate and post pictures",
They were fine when I uploaded them. The app flipped them somehow. I have edited them and rotated them on my phone and several directions. No matter what I do when I upload them they're upside down. I've always had problems with this app. I can't even add photos with the image button because it errors out I have to use the attach button. I had to resize the photos or the app wouldn't make changes. I don't know why it flips them in the first place. Oh well.
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