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Suggested interval for transmission Magnefine filter replacement and ******* transmission flush

2031 Views 27 Replies 7 Participants Last post by  wag3719
Fully realize that I am asking a question here that can slip into various 'religious' opinions, but I was hoping to hear people's thoughts on how often to swap out the Magnefine transmission oil filter and how often to do the ******* transmission flush.

I am personally also going to replace the stock transmission filter (part number 35330-08010) at the same interval of the ******* transmission flush. I realize that there are various opinions about this on the forums as well but that is something I am going to do no matter what.

My current thoughts are to replace the Magnefine transmission oil filter once a year and then look at the ******* transmission flush every 50,000 miles. But, I am not hard set on this at all and look forward to hearing other people's thoughts.
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@ericreyn Yes, but be careful. A lot of stores will say it is 3/8ths when, in fact, it is actually 11/32nd's. I know it sounds like a small difference but can make for a real bear in getting the house attached.

Here is a link to an actual 3/8ths hose online at 4.5 feet:
Amazon.com

Here is the same company at 25 feet:
Amazon.com


I have also attached an image that I got from a forum posting that is close to how I placed my inline transmission filter. View attachment 59284
Your picture does not reflect what we have in the 2nd gen forum. In the 2nd gen the transmission fluid cooler is inside the driver's (left) side of the radiator so the filter will not be mounted in this fashion.
@wag3719 I may have something confused here. But, I have a 2nd gen myself with a 2010 Sienna LE. And, that is exactly where I have the filter. I did that as part of also putting my secondary transmission cooler that is over on the passenger side in front of the radiator.

All that was added given a cross country trip where I was towing a fairly heavy trailer relative to the tow allowances for the 2nd gen Sienna. Now, I did have the 'tow package' which essentially meant the oil cooler but I wanted an added boost to help keep the transmission cool.
I agree with LD, my 2009 looks like the picture except for the added filter with
The cooler being on the passenger side.
@wag3719 I may have something confused here. But, I have a 2nd gen myself with a 2010 Sienna LE. And, that is exactly where I have the filter. I did that as part of also putting my secondary transmission cooler that is over on the passenger side in front of the radiator.

All that was added given a cross country trip where I was towing a fairly heavy trailer relative to the tow allowances for the 2nd gen Sienna. Now, I did have the 'tow package' which essentially meant the oil cooler but I wanted an added boost to help keep the transmission cool.
I forgot that they switched engines mid-stream. My bad, sorry.
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I have been doing transmission drain and fills every 30k miles since my 05 was new. At the first 30k drain and fill I installed a Magnefine transmission filter. I replaced the Magnefine at 60k and opened it up. Inside I found virtually nothing so I decided that changes every 30k were too often. At 120k I changed the Magnefine and again found virtually nothing. Personally, I don't think that 1 year or 12k replacement intervals are necessary, IMO the Magnefines will go much longer.
good Info and I agree that the lower mileage intervals are not necessary. I change my fluid every 80K and haven't replaced the filter yet. I am at 200K and am about to change the filter and will let yall know what I find
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Looking forward to hearing what you see with your filter.
good Info and I agree that the lower mileage intervals are not necessary. I change my fluid every 80K and haven't replaced the filter yet. I am at 200K and am about to change the filter and will let yall know what I find
I would be interested to know whether anything will pass thru it after said amount of miles.
The only reason I mention this at all is I had a another vehicle years ago with a rail mounted fuel filter that I let go twice the recommended distance and it was plugged. I could not blow thru it, the new one i could.
I could not blow thru it, the new one i could.
Once the filter media is saturated with ATF, you will not be able to blow through it. Magnefine filters have an engineered-in bypass valve so that when/if the filter media actually gets plugged the fluid will still flow.
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