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Re: Trans flush or pan drop? [Re: HoosierJeeper] #5415655 04/28/20 02:20 PM
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WylieCoyote Offline
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I got the fluid done in my '05 Sport Trac religiously at 30K. I THOUGHT the Ford dealer was dropping the pan & changing the filter at 30K & 60K. I found out at 90K that they were just replacing fluid.

As 90K was out of warranty, I took it to Kwik Kar, and requested a pan drop & filter replacement. From the way the filter insides looked, I see no way fluid was traveling through it.

Now I just take my cars to a franchise, instead of a dealer to have this specific job done, as the Chevy dealer balked at dropping the pan on the Canyon at 30K. Fine, my money spends elsewhere.

I will always drop the pan & filter on tranny fluid changes. I just find that, for whatever reason, dealerships don't want to do it.


2015 Canyon 3.6
2018 Mustang Ecoboost Convertible
2017 Focus ST
Re: Trans flush or pan drop? [Re: edyvw] #5415665 04/28/20 02:36 PM
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Donald Offline
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Originally Posted by edyvw
Originally Posted by Donald
Originally Posted by rob1715
I know 2 guys who own trans shops and both said to never do a flush. They said D/R every 30k miles or so will do it.


What was their reason? They don't want to be responsible?

If it is safe to do flush, why should they think anything is going to fail?
Oh yeah, transmission manufacturers do not recommend flush.


Well the thinking is by the time people get to thinking about their transmission, it has a problem and has never been serviced.

Best to ask the owners of the transmission shop how they would service their own transmission to have it outlast the vehicle.


2015 Ford F-250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: Trans flush or pan drop? [Re: HoosierJeeper] #5415685 04/28/20 02:59 PM
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sloinker Offline
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I always drop the pan and change the filter. The drain plug just allows for less of a mess. The filter change is the objective, I suppose you could do the flush after the filter change if you really wanted to get maximum fluid out of the tranny.


'16 Tiguan TSI Vaico 5W40
'15 VW Golf TDI Red Line 5W30 Euro
'15 VW Golf Sportwagen TDI M1 ESP 5W30
'14 Dodge Grand Caravan 3.6 Valvoline 5W20 Semi Synthetic
'64 Plymouth Fury440 Pending
Re: Trans flush or pan drop? [Re: Donald] #5415693 04/28/20 03:13 PM
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edyvw Offline
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Originally Posted by Donald
Originally Posted by edyvw
Originally Posted by Donald
Originally Posted by rob1715
I know 2 guys who own trans shops and both said to never do a flush. They said D/R every 30k miles or so will do it.


What was their reason? They don't want to be responsible?

If it is safe to do flush, why should they think anything is going to fail?
Oh yeah, transmission manufacturers do not recommend flush.


Well the thinking is by the time people get to thinking about their transmission, it has a problem and has never been serviced.

Best to ask the owners of the transmission shop how they would service their own transmission to have it outlast the vehicle.

That is why transmission manufacturers do not recommend.
Also, flush it but do not change filter? So what happens if something is stuck in the filter?


11' BMW 328i xDrive 6MT (Pennzoil Platinum Euro 5W40+ MANN filter)
11' VW Tiguan 2.0T (Castrol 0W30+OE filter)
15' Toyota Sienna AWD (Mobil1 5W30 EP+OE filter).
Re: Trans flush or pan drop? [Re: HoosierJeeper] #5415705 04/28/20 03:27 PM
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Kira Offline
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Donald got it above. "...by the time people get to thinking about their transmission, it has a problem and has never been serviced." It's disheartening to side with a dealership but you can't blame 'em for wanting to distance themselves from a big, hairy situation. They can't be required to educate the customer base.

edyvw asked, "So what happens if something is stuck in the filter?". If it's a discernible piece of something-even a 1" long hunk of gasket- likely nothing will happen.
Transmission filters are rock catchers. The element in every one I've ever removed was completely clean "cloth".

WylieCoyote's tale of a plugged up filter is a rarity. I bet accumulation of such magnitude is "transmission specific".
Probably another boo on GM. There you can vilify his dealer because they didn't do what he asked for. They are lice, after all.

Re: Trans flush or pan drop? [Re: HoosierJeeper] #5415714 04/28/20 03:34 PM
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The Critic Offline
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Since it is a rebuild I would consider doing both.


2020 Ram 1500 5.7L eTorque - <1K - Factory Fill
2011 Toyota Prius 1.8L - 209K - Valvoline Premium Blue Restore 10W-30
2007 Honda Accord 2.4L - 146K - Valvoline Premium Blue Restore 10W-30
Re: Trans flush or pan drop? [Re: HoosierJeeper] #5415757 04/28/20 04:05 PM
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Gebo Offline
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Pan drop.


'98 LEX LS400 310K
'02 4Runner 250K
'05 Lex LS430 90K
'07 Lex GX470 75K

Shell Gas and Truck 5w-30
Amsoil OE 10w-30
Toyota ATF's and Coolant
Amsoil Gear Oil and Grease
Re: Trans flush or pan drop? [Re: Kira] #5415763 04/28/20 04:11 PM
Joined: Mar 2012
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edyvw Offline
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Originally Posted by Kira
Donald got it above. "...by the time people get to thinking about their transmission, it has a problem and has never been serviced." It's disheartening to side with a dealership but you can't blame 'em for wanting to distance themselves from a big, hairy situation. They can't be required to educate the customer base.

edyvw asked, "So what happens if something is stuck in the filter?". If it's a discernible piece of something-even a 1" long hunk of gasket- likely nothing will happen.
Transmission filters are rock catchers. The element in every one I've ever removed was completely clean "cloth".

WylieCoyote's tale of a plugged up filter is a rarity. I bet accumulation of such magnitude is "transmission specific".
Probably another boo on GM. There you can vilify his dealer because they didn't do what he asked for. They are lice, after all.

However, most important thig: transmission manufacturers recommend pan drop and refresh. But, maybe guy in Jiffy Lube knows better.


11' BMW 328i xDrive 6MT (Pennzoil Platinum Euro 5W40+ MANN filter)
11' VW Tiguan 2.0T (Castrol 0W30+OE filter)
15' Toyota Sienna AWD (Mobil1 5W30 EP+OE filter).
Re: Trans flush or pan drop? [Re: HoosierJeeper] #5415782 04/28/20 04:29 PM
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PontiacHO Offline
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Draw fluid out with top side with oil change pump. Replenish accordingly. Haven’t seen a drain plug in a trans pan or torque converter in years. If there’s enough stuff shucking off to clog the trans filter dropping the pan won’t help. Normal bushing wear stays in the bottom of the pan. Flushing just stirs up that wear/sediment and it gets in the valve body. Trouble then.

Re: Trans flush or pan drop? [Re: PontiacHO] #5415934 04/28/20 07:26 PM
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tbm5690 Offline
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Originally Posted by PontiacHO
Draw fluid out with top side with oil change pump. Replenish accordingly. Haven’t seen a drain plug in a trans pan or torque converter in years. If there’s enough stuff shucking off to clog the trans filter dropping the pan won’t help. Normal bushing wear stays in the bottom of the pan. Flushing just stirs up that wear/sediment and it gets in the valve body. Trouble then.


Interesting...my past 5 vehicles have all had drain bolts.


2014 Acura MDX Tech SH-AWD
2014 Nissan Maxima SV Sport/Tech
2007 Honda Shadow Spirit VT1100C
Re: Trans flush or pan drop? [Re: HoosierJeeper] #5415937 04/28/20 07:29 PM
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All I do is a simple pan drain and refill every 50k miles.


"He who is without oil, shall throw the first rod." - Compressions 9:1
Re: Trans flush or pan drop? [Re: tbm5690] #5416099 04/29/20 04:23 AM
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PontiacHO Offline
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Originally Posted by tbm5690
Originally Posted by PontiacHO
Draw fluid out with top side with oil change pump. Replenish accordingly. Haven’t seen a drain plug in a trans pan or torque converter in years. If there’s enough stuff shucking off to clog the trans filter dropping the pan won’t help. Normal bushing wear stays in the bottom of the pan. Flushing just stirs up that wear/sediment and it gets in the valve body. Trouble then.


Interesting...my past 5 vehicles have all had drain bolts.


Good to know. What brands of vehicles? My last three trucks ( Ford - GM) didn’t.

Re: Trans flush or pan drop? [Re: PontiacHO] #5416153 04/29/20 07:20 AM
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tbm5690 Offline
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Originally Posted by PontiacHO
Good to know. What brands of vehicles? My last three trucks ( Ford - GM) didn’t.

Mazda, Toyota/Lexus, Nissan, and Acura


2014 Acura MDX Tech SH-AWD
2014 Nissan Maxima SV Sport/Tech
2007 Honda Shadow Spirit VT1100C
Re: Trans flush or pan drop? [Re: Barkleymut] #5416156 04/29/20 07:26 AM
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HoosierJeeper Offline OP
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Originally Posted by Barkleymut
4 Jeeps in your sig, so you may be a good person to ask. My mom wants a "CRV sized" SUV. What engine/trans combo is the most reliable in the Jeep lineup?


Newer Cherokee (17+) with the 3.2. Pentastar is a reliable engine, plus the 9 speed tranny has been fixed with 17s and up. Honda uses the same transmission now too. Grands with either powertrain are reliable, but that's a lot bigger than a CRV.

Thanks for the advice, pan drop it is. Does Permatex Ultra Gray RTV work? Do I need to do it at a certain temp or measure what comes out? I have a dipstick BTW... old school!


19 Jeep Renegade Trailhawk 1.3T
15 Jeep Cherokee Limited V6
07 Land Rover LR3 SE V8
05 Jeep Liberty Limited V6
96 Jeep Cherokee Country 4.0
Re: Trans flush or pan drop? [Re: HoosierJeeper] #5416190 04/29/20 08:15 AM
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Barkleymut Offline
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measure what comes out and put that amount back in. Follow the manufacturers recommendation for checking the level after that.


09 Vue 2.4L 4spd AT/ 09 Flex 3.5L / 96 F150 5.0 5speed / 07 Mustang GT auto
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