Draining Transmission Fluid?

Staceman · 05-11-2007, 02:21 PM

I've got the A340E Auto trans in my 88 turbo. The filter is a mesh screen. My Toyota dealer doesn't carry one, but can order one. I just cleaned mine out with some brake parts cleaner to get the grit out.

cars4me89 · 05-13-2007, 08:33 AM

well hopefully you havent changed the fluid yet because if you said that the transmission fluid has never been changed it would be horrible for the tranny to put new fluid in if it is extremely old, the best thing to do if it is that old would be to have the trans live out its life with the same fluid in it.. do not change it

j3pz · 05-13-2007, 05:25 PM

Quote:

Originally Posted by cars4me89

well hopefully you havent changed the fluid yet because if you said that the transmission fluid has never been changed it would be horrible for the tranny to put new fluid in if it is extremely old, the best thing to do if it is that old would be to have the trans live out its life with the same fluid in it.. do not change it

not disagreeing with you but with a post like that you may want to explain why so people will understand it better... im also curious as to why you wouldnt want to do change it

Bill UK · 05-13-2007, 06:29 PM

More info here.

http://www.cygnusx1.net/Supra/TechTips/transmission_filter.aspx

cars4me89 · 05-13-2007, 08:55 PM

well the reason its a bad idea to change old fluid if its never been changed is because the fluid gets all the dirt and junk built up and the hoses and lines expand and since automatic transmissions run by fluid pressure, the old fluid expands with the gunk build up and expands the hoses. So what happens when you replace that old gunked up expanded fluid with fresh new fluid? the transmission can build up the proper pressure to function. This is a very vague and general explanation and is probably partially incorrect, anyone else who knows more please expand on this.

supramacist · 05-13-2007, 09:16 PM

All I can say Is I have always been told that if you haven't ever changed it...., Don't. Pretty much for the same reason as stated above.

Somajunkie · 05-14-2007, 07:19 PM

Hello I know this isn't in direct correlation with OP problem, but I have a prolem w/ my Transmission fluid leaking. I am a noob and just recently purchased the Supra. According to the guy who sold it to me his mechanic overfilled the Tranny with 2.5qts when in fact it should be 1.7. He told me to replace the fluid, drain the old and replace w/new. Every time I use it it creates two little puddles, the more i use the car the bigger the puddles. The leak seems to be coming from somewhere by the tranny pan but I'm not too sure. The puddles are not extremely dense and at most are the span of my extended hand, but they still worry me. So if you guys could be of some help i would greatly appreciate it!

gttwinturbomk3 · 05-17-2007, 10:17 AM

Quote:

Originally Posted by cars4me89

well hopefully you havent changed the fluid yet because if you said that the transmission fluid has never been changed it would be horrible for the tranny to put new fluid in if it is extremely old, the best thing to do if it is that old would be to have the trans live out its life with the same fluid in it.. do not change it

I would say it would have to be very old for you to not bother servicing it.

05-13-2007, 08:33 AM	#2
cars4me89 3" Exhaust Join Date: Jun 2006 Location: Phoenix, AZ Posts: 115	well hopefully you havent changed the fluid yet because if you said that the transmission fluid has never been changed it would be horrible for the tranny to put new fluid in if it is extremely old, the best thing to do if it is that old would be to have the trans live out its life with the same fluid in it.. do not change it __________________ 1987 Toyota Supra 7M-GE Natrually Aspirated Automatic http://www.cardomain.com/ride/2385905 Currently enrolled in UTI (Universal Technical Institute.. ya ya say what you want bout the school lol its got some nice benefits though), have about two years of auto experience so far.. only 18 years old. My supra's older than me :P -Phil

05-13-2007, 08:55 PM	#5
cars4me89 3" Exhaust Join Date: Jun 2006 Location: Phoenix, AZ Posts: 115	well the reason its a bad idea to change old fluid if its never been changed is because the fluid gets all the dirt and junk built up and the hoses and lines expand and since automatic transmissions run by fluid pressure, the old fluid expands with the gunk build up and expands the hoses. So what happens when you replace that old gunked up expanded fluid with fresh new fluid? the transmission can build up the proper pressure to function. This is a very vague and general explanation and is probably partially incorrect, anyone else who knows more please expand on this. __________________ 1987 Toyota Supra 7M-GE Natrually Aspirated Automatic http://www.cardomain.com/ride/2385905 Currently enrolled in UTI (Universal Technical Institute.. ya ya say what you want bout the school lol its got some nice benefits though), have about two years of auto experience so far.. only 18 years old. My supra's older than me :P -Phil

05-14-2007, 07:19 PM	#7
Somajunkie Stock Join Date: May 2007 Location: Los Angeles Posts: 11	Halp! Hello I know this isn't in direct correlation with OP problem, but I have a prolem w/ my Transmission fluid leaking. I am a noob and just recently purchased the Supra. According to the guy who sold it to me his mechanic overfilled the Tranny with 2.5qts when in fact it should be 1.7. He told me to replace the fluid, drain the old and replace w/new. Every time I use it it creates two little puddles, the more i use the car the bigger the puddles. The leak seems to be coming from somewhere by the tranny pan but I'm not too sure. The puddles are not extremely dense and at most are the span of my extended hand, but they still worry me. So if you guys could be of some help i would greatly appreciate it!

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05-11-2007, 02:21 PM	#1
Staceman Intake Join Date: Nov 2006 Location: Phoenix, Az. Posts: 48	I've got the A340E Auto trans in my 88 turbo. The filter is a mesh screen. My Toyota dealer doesn't carry one, but can order one. I just cleaned mine out with some brake parts cleaner to get the grit out.

05-13-2007, 06:29 PM	#4
Bill UK AEM EMS Join Date: Jul 2006 Location: UK Posts: 891	More info here. http://www.cygnusx1.net/Supra/TechTips/transmission_filter.aspx

05-13-2007, 09:16 PM	#6
supramacist 1000whp postwhore Join Date: Apr 2007 Location: Escape from the Prison Planet Posts: 1,356	All I can say Is I have always been told that if you haven't ever changed it...., Don't. Pretty much for the same reason as stated above.