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Old 04-25-2020, 03:52 AM #16
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Its nice to hear that those machines dont do any damage..in the olden days they did..but I too prefer to twist my own wrenches . I also at the same time change my magnafine filter. I did not change or drop my pan on the last flush but will this time b4 fall.
I usually do many other things at same time, fuel filter, lube u-joints, oil change, check levels in transfer case and diffs, look for leaks or anything else that might be wiggling loose.
I like doing my own work, its a hobby and it gives me peace of mind to do everything else and the inspections and know first hand the conditions of everything.
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Old 04-25-2020, 03:58 AM #17
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At the oil can Henry’s/Valvoline ship I use they use that machine. I did it every 50k or so on my commuter rigs and 25-30k on the tow rigs for many years.

It sucks out, then fills, then sucks, then fills, ect...They put enough fluid in it for a good exchange/dilution. Takes about 15 to 20 minutes. You can watch the fluid coming out start out dark and gradually get nice bright red after a few cycles.

I dont do a pan drop, filter and magnets on every oil change on my rigs.

They have you sign a waiver. I’ve never had any issue.
Ide recommend a pan drop for the first go on a new to you rig that’s older. I don’t think most folks know rigs use anything but gas and engine oil, and quite a few of those don’t seem to know about the engine oil.
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Old 04-25-2020, 09:26 AM #18
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Now that I've learned more about these machines that go through the dipstick tube, I'd have to say they are pretty cool and I subscribe to dilution processes to keep the trans fluid in good shape.

@infamousRNR and I made the full flush video to have that as an option for people who don't believe in the drain and refill dilution process. On any vehicle I've had with an auto transmission, I've never paid for or performed a full flush on them. I just do more regular drain and refills. Instead of waiting a full 30k or so to do a full flush, I introduce new fluid on a more regular basis by doing a drain and refill every 10k and replace my Magnefine in-line trans filter at the same time. The Magnefine filters are rated to last 30k miles but I just swap it out anyway because we're not talking a huge amount of money.

I did a Blackstone Labs analysis of my trans fluid not too long ago and my fluid was in great shape from my more regular drain and refills.

As for dropping the pan to replace the filter and clean off the magnets, I believe this is a waste of time. When I made the filter replacement video, it was for the benefit of our viewers but also to satisfy my curiosity of the health of my trans by seeing how much metal debris had accumulated on the magnets and to also see if the filter was clogged at all. What I found is a filter that was 95% unclogged and with magnets with very little metal debris on them. Those magnets can attract metal for the life of your rigs without needing cleaning. When @infamousRNR trans had a major failure, those magnets had tons of metal attached to them. That let me know they can successfully attract metal debris from normal wear for the life of the trans.

So, OP, I don't know if you considered this, but you could simply do one drain and refill of your trans pan at the same time as your next engine oil change, then follow that with 2 more drain and refills at the next 2 consecutive engine oil changes. After 3 drain and refills spread apart by around 5k miles, your fluid will be in good shape. Then you could do like I do and do a drain and refill every 10k and you'll be golden. Just another option for you consider.
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Old 04-25-2020, 01:50 PM #19
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Quote:
Originally Posted by jgue467 View Post
I take all my vehicles to shops with trans flush machines, since the 80's, zero issues in any of them.

They hook up to the trans out/in lines not the dipstick.

Therefore the machine provides zero pressure, it is relying on the trans pump entirely. Sort of slow but 20 mins later, flowing clear red...ahhhh....

Don't be afraid of modern science mang!
I always heard transmission flushes were really bad.

YouTube
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Old 06-20-2020, 03:25 AM #20
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Quote:
Originally Posted by mtbtim View Post
You don't need a machine to do a full flush. You just need someone to help you out and you can do it utilizing the transmission pump to move the fluid for you.

Always great videos Tim! Can I overfill by one quart every time I replenish the ATF and drain 2 quarts at a time? I don't think overfilling would be that bad for a short time with no load on the tranny right? This way I can get to the 12 quarts with less starting and stopping of the engine.

What do you guys think? Comments please!

Thanks!
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Old 06-21-2020, 02:01 PM #21
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bump! Anyone?
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Old 06-21-2020, 07:59 PM #22
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Quote:
Originally Posted by mtbtim View Post
I don't think they are a good idea. If the fluid pressure the machine exerts is more than what the trans pump normally exerts, it could free up sludge deposits inside the trans and possibly lodge in fluid passageways in the valve body causing issues. I'd much rather do it the manual method we show in the video.
Hey Tim. I'm kind of a junkie for service manuals, so I took a look at the manual for this one. It works pretty simply.

1. It sucks the trans fluid out of the dipstick tube until the pan is empty.
2. It then pumps new fluid back into the pan.
3. YOu turn on the engine, cycle the shifter through the gears.
4. The machine pulls 1 qt of fluid and exchanges 1 qt at a time until it has exchanged the preselected amount of fluid.

As far as I can tell, this is not a power flush machine. It simply drains the pan via the dipstick, then refills and uses dilution to exchange the fluid that remained in the rest of the trans. I would say this is not a power flush system, as it is not pushing fluid into the trans body, rather just sucking fluid out and then refilling it.

For a shop, this is a super quick and easy method of doing a trans fluid exchange. The 4runner is super easy to do using the trans cooler lines, and since most of us are DIYERS on here, your method is a quick and easy way for someone to do in their driveway. Love the videos by the way! I'll be using several to do my Valve Cover gaskets on my 388k rig!
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