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I'm in agreement with @04UZJ100 . The tendency on enthusiasts forums is to over service and too much time on here may normalize what is an unnecessary practice. Maintenance induced issues is a very real thing too causing unnecessary headaches. Transmission flushes is in that wheelhouse. Professional machine based flushes was popular many years ago, yet they introduced so much liability and issues that it's not practiced anymore. Dropping the pan is up there too. The "filter" within the transmission is more a catch than the type that needs to be changed.
I forget the name of the theory/study of the air squadron during WWII that had all these plane issues from maintenance. They stopped over maintaining things and reliability went wait up.

These trucks need fluids. That’s pretty much it. Folks that are dropping trans pans and even oil pans to replace “pick up tubes” absolutely boggles my mind.
 
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I need help from the brain trust!! Should I go with 285/50 or 285/60? And what is going on with my roof rails….are these all the pieces or am I missing some, does it matter?

Thank you in advance

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View attachment 3386599

There are rubber strips that sit down in there and they like to disappear all the time. 75555-60020 and 75551-60110 are the part numbers if I remember right.
 
@lougill 285/50
 
I forget the name of the theory/study of the air squadron during WWII that had all these plane issues from maintenance. They stopped over maintaining things and reliability went wait up.

These trucks need fluids. That’s pretty much it. Folks that are dropping trans pans and even oil pans to replace “pick up tubes” absolutely boggles my mind.
To the point of over-maintaining—I recently met a man from Afghanistan who now works on LCs and other 4x4s here in Va. He mentioned how in Afghanistan these machines (prado/hilux included of course) are all over the place and do not quit despite the constant rough driving conditions and no maintenance done to them. I laughed and said, “yeah who knows what fluids they use. I’m sure they just top-off the engine oil every-so-often.”

He then gave a laugh and a look that said, “No, American. No maintenance. Did I stutter?” and further expressed his point. Great conversation.

Of course, in one of the most dangerous countries in the world, the standards are different and vehicles get pushed to extremes despite things being broken, but I agree on not over-maintaining most of the time. Proper lubrication is key—or not if you live in Afghanistan.
 
Over maintenance? A transmission drain and fill at 137,000 miles…i have lost my mind, thanks for straightening me out!

I'm sure you mean well and sounds like it went okay with just a few broken bolts. About typical but we shouldn't normalize this. This is a real area of concern for those unaware, and has caused some major headaches. Potential for creating internal issues, but also sealing and clamping issues if the threads were damaged.

 
Over maintenance? A transmission drain and fill at 137,000 miles…i have lost my mind, thanks for straightening me out!
I wouldn’t call fluids over-maint. But don’t feel bad at 137k…just did mine at 176k and boy I’d be surprised if it had ever been changed. I didn’t notice any difference in shifting or mpg as it was already as smooth as I’d expect…so maybe that’s a good thing?
 
Over maintenance? A transmission drain and fill at 137,000 miles…i have lost my mind, thanks for straightening me out!
I’m at 141k and still haven’t done it. If the transmission is operating perfectly, why mess with it? I don’t believe that this would fall under the preventative maintenance schedule.
 
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For me and my transmission, if the gasket begins to leak is when I’ll do a tranny filter and gasket replace. Otherwise—with my luck—I’d create a problem, so I’ll just stick to drain/refill or exchange/refill.

Most recently I watched NLScooby’s trans drain/exchange and timed how long it took him to fill 3 quarts when draining and did the same but instead drained it from the pan since I was solo and couldnt watch it fill. I know—not as good as the proper way since it does mix the old and new—but will do properly before 200k. Tht said, trans fluid is now much cleaner looking. Procedure was very easy.
 
Over maintenance? A transmission drain and fill at 137,000 miles…i have lost my mind, thanks for straightening me out!
No. I didn’t say that. I said trucks need fluids, not invasive maintenance.

I do a complete transmission fluid exchange on my 5 Toyota Trucks every 90k miles and the only thing I open is a piece of tubing near the radiator and the drain and fill plugs.
 
This place is wild sometimes, if he didn’t mention the broken bolts it’d probably be all silent about the drain and fill procedure.

This forum: no keep the rig and fix it, you’ll regret selling such a fine vehicle.
Also this forum: No not like that you dummy.

Educate the man, doubt he’d want to ask for help again after all this “some owners don’t know when to stop” narrative
 
This place is wild sometimes, if he didn’t mention the broken bolts it’d probably be all silent about the drain and fill procedure.

This forum: no keep the rig and fix it, you’ll regret selling such a fine vehicle.
Also this forum: No not like that you dummy.

Educate the man, doubt he’d want to ask for help again after all this “some owners don’t
This place is wild sometimes, if he didn’t mention the broken bolts it’d probably be all silent about the drain and fill procedure.

This forum: no keep the rig and fix it, you’ll regret selling such a fine vehicle.
Also this forum: No not like that you dummy.

Educate the man, doubt he’d want to ask for help again after all this “some owners don’t know when to stop” narrative
In his posts did he not ask for knowledge/advice/opinion? Isn’t what this forum is for…?
 
This place is wild sometimes, if he didn’t mention the broken bolts it’d probably be all silent about the drain and fill procedure.

This forum: no keep the rig and fix it, you’ll regret selling such a fine vehicle.
Also this forum: No not like that you dummy.

Educate the man, doubt he’d want to ask for help again after all this “some owners don’t know when to stop” narrative

didn’t do a

This place is wild sometimes, if he didn’t mention the broken bolts it’d probably be all silent about the drain and fill procedure.

This forum: no keep the rig and fix it, you’ll regret selling such a fine vehicle.
Also this forum: No not like that you dummy.

Educate the man, doubt he’d want to ask for help again after all this “some owners don’t know when to stop” narrative
He didn’t do a drain and fill. Drain and fill is not removing the pan from the transmission.
 
Lol, I’m at 141k and still haven’t done it. If the transmission is operating perfectly, why mess with it? I don’t believe that this would fall under the preventative maintenance schedule.
The color of my fluid was anything but red, it was black and I have already put 90 miles on since I picked it up and it sure seems smoother, but thats coming from a guy who is doing to much maintenance😂😂
 
I recently dropped the transmission pan to change my filter and clean the contaminates off the magnets at 70k with the 8 speed. It was very easy and there’s little room for error. The OEM gasket from Toyota is about a half an inch thick piece of rubber with metal inserts (robust) and the you don’t even need to scrape the old gasket off the tranny. It just comes off with the pan and you replace it with a new one… so no risk in gouging the mating surface if you were to replace the gasket.

I would absolutely recommend doing it on the 8 speed, and I haven’t heard of many issues arising from servicing the 8 Speed yet.

With the 6 speed (08-15), I would be hesitant to drop the transmission pan on a rusty rig since it is known there are two bolts on the pan that experience severe corrosion and break off easily when attempting to drop the pan. If the rig was clean underneath, I wouldn’t be too concerned about it, but if there’s any rust on those transmission pan bolts, forget it.
 
I recently dropped the transmission pan to change my filter and clean the contaminates off the magnets at 70k with the 8 speed. It was very easy and there’s little room for error. The OEM gasket from Toyota is about a half an inch thick piece of rubber with metal inserts (robust) and the you don’t even need to scrape the old gasket off the tranny. It just comes off with the pan and you replace it with a new one… so no risk in gouging the mating surface if you were to replace the gasket.

I would absolutely recommend doing it on the 8 speed, and I haven’t heard of many issues arising from servicing the 8 Speed yet.

With the 6 speed (08-15), I would be hesitant to drop the transmission pan on a rusty rig since it is known there are two bolts on the pan that experience severe corrosion and break off easily when attempting to drop the pan. If the rig was clean underneath, I wouldn’t be too concerned about it, but if there’s any rust on those transmission pan bolts, forget it.
Again dropped the pan, did a drain, replaced the strainer and cleaned magnets, 3 bolts broke but all bolts replaced with new ones it really wasn’t a big deal to my very good and experienced mechanic.
But it was considered over maintenance on this form….pretty sure going forward I will be (as I always have) listen to my guy who does this for a living and specializes in Japanese vehicles.
 
It’s a metal screen. Like a window screen.
agree with this thread a lot. I did a full blown transmission oil change with drop pan and replace filter screen. The filter screen replacement is really useless and too many things when wrong. One of the nuts which hold filter broke on me. I put the new filter with just one nut. The whole transmission pan drop is not worth the pain as someone mentioned. It is better to do a drain and refill couple of times rather than to drop the pan. I didnt see anything bad in the pan or the filter to go through this replacement.
 
I did the drop pan and replace filter screen with a fluid exchange. I had no idea what transmission maintenance was done to it since I bought it at 87,000 miles, so I took the safe route and made sure everything was good. Yes, you don't need to change the "filter" but if you dropped the pan, you might as well do it. You get to clean all the gunk out from the bottom of the pan and magnets with the pan drop too.

Also, there is a lot of old fluid that sits in the pan even after draining if you don't drop it. I know close up and personal. An almost perfectly smooth transmission fluid change went bad when I though I had one rear and front bolt securing the pan from dropping when I broke the gasket free. Nope, just the front bolt was in and the rear fooled me, so I wore all that leftover old transmission fluid right in the center of my chest. Fun times and uncontrolled curse words resulted as well as throwing away all clothes involved. Lol.

I also wanted to replace as much of the non synthetic trans fluid with synthetic, so the pan drop was a no brainer. Future changes won't need it. I know what was done and know what needs to be done now.

If you have a lot of miles on the trans and know for a fact that no maintenance was done ever, than doing a fluid exchange might not be the best idea. I was almost at a 100K when I did mine.
 
My pan is stuck to the transmission. Any advice how to get it off without damaging the matting surfaces?
 

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