mk3 supra power steering fluid

2fast4u · 04-10-2012, 11:06 PM

hello ive got a 1990 toyota supra turbo with the 7mgte. i went to oreily auto parts to buy power steering fluid for my car. they told me i have to use dexron type automatic transmission fluid so they told me use dexron type 4. i put dexron 4 no problems or sounds but the manual says use dexron type 2. iam concerned that i might be ruining my power steering

cre · 04-10-2012, 11:37 PM

It's Dexron VI (6) not IV (4, never existed as a final product. No such thing as V or 5 either.). It is backward compatible but I recommend you fully replace the old fluid. The viscosity between the two is different and while it's still not well mixed in a power steering system you may notice off and on excessive response or resistance. Also, as it's thinner and will have active detergents, if you have a leak, expect it to be worse.

2fast4u · 04-10-2012, 11:45 PM

what do you recommend putting in becuase when i did the head gasket i removed the power steering can/filler. there fore when i was done with the head gasket i just filled it up with dexron 6. VI. should i drain and redo it and if so with what kind of fluid.

cre · 04-11-2012, 12:32 AM

Oh, they're technically safe to mix so if you've had it in there for a while I wouldn't sweat it. Nonetheless, changing the fluid completely isn't a bad idea.... It's probably never been done before.

I would use Dex VI for the lower viscosity, higher shear resistance and lower friction coefficient. I'd change it out a second time after a month or two because all the fresh detergent it likely to loosen up a fair amount of crap.

2fast4u · 04-11-2012, 04:07 AM

If i change it which pipe would be the return line

cre · 04-11-2012, 05:58 AM

The return is low pressure... Has constant tension clamps as opposed to crimped fittings.

2fast4u · 04-11-2012, 02:29 PM

Alright. Thanks but what's the difference between crimped and constant clamps

cre · 04-11-2012, 04:05 PM

Constant tension clamps aka CT clamps = The spring type phose clamp you use your fingers or pliers (or special tool) to remove and replace. FAR superior to worm gear clamps or regular T-bolt clamps but just below CT T-bolt clamps.

Crimped hoses have a metal cap that surrounds the entire end of the hose. Not to be confused with AN fittings which are hex shaped (the Supra doesn't have any of these stock anyway, so no worries).

2fast4u · 04-11-2012, 06:47 PM

they both have those clamps that you use your fingers or pliers. both of the line thats on the canister have those

cre · 04-11-2012, 07:15 PM

I'm sorry... I was thinking on the compressor. The reservoir sits in the middle of the low pressure line. I believe you want the one which runs to the cooler, not the pump. http://www.cygnusx1.net/Supra/Librar...spx?F=4503&P=1

04-10-2012, 11:06 PM	#1
2fast4u 3" Exhaust Join Date: Mar 2012 Location: kent washington Posts: 57 Blog Entries: 1	mk3 supra power steering fluid hello ive got a 1990 toyota supra turbo with the 7mgte. i went to oreily auto parts to buy power steering fluid for my car. they told me i have to use dexron type automatic transmission fluid so they told me use dexron type 4. i put dexron 4 no problems or sounds but the manual says use dexron type 2. iam concerned that i might be ruining my power steering __________________ 2 fast 4 u

04-10-2012, 11:37 PM	#2
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	It's Dexron VI (6) not IV (4, never existed as a final product. No such thing as V or 5 either.). It is backward compatible but I recommend you fully replace the old fluid. The viscosity between the two is different and while it's still not well mixed in a power steering system you may notice off and on excessive response or resistance. Also, as it's thinner and will have active detergents, if you have a leak, expect it to be worse. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

04-10-2012, 11:45 PM	#3
2fast4u 3" Exhaust Join Date: Mar 2012 Location: kent washington Posts: 57 Blog Entries: 1	mk3 supra what do you recommend putting in becuase when i did the head gasket i removed the power steering can/filler. there fore when i was done with the head gasket i just filled it up with dexron 6. VI. should i drain and redo it and if so with what kind of fluid. __________________ 2 fast 4 u

04-11-2012, 12:32 AM	#4
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Oh, they're technically safe to mix so if you've had it in there for a while I wouldn't sweat it. Nonetheless, changing the fluid completely isn't a bad idea.... It's probably never been done before. I would use Dex VI for the lower viscosity, higher shear resistance and lower friction coefficient. I'd change it out a second time after a month or two because all the fresh detergent it likely to loosen up a fair amount of crap. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

04-11-2012, 04:07 AM	#5
2fast4u 3" Exhaust Join Date: Mar 2012 Location: kent washington Posts: 57 Blog Entries: 1	Mk3 supra If i change it which pipe would be the return line __________________ 2 fast 4 u

04-11-2012, 05:58 AM	#6
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	The return is low pressure... Has constant tension clamps as opposed to crimped fittings. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

04-11-2012, 02:29 PM	#7
2fast4u 3" Exhaust Join Date: Mar 2012 Location: kent washington Posts: 57 Blog Entries: 1	Mk3 supra power steering fluid Alright. Thanks but what's the difference between crimped and constant clamps __________________ 2 fast 4 u

04-11-2012, 04:05 PM	#8
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Constant tension clamps aka CT clamps = The spring type phose clamp you use your fingers or pliers (or special tool) to remove and replace. FAR superior to worm gear clamps or regular T-bolt clamps but just below CT T-bolt clamps. Crimped hoses have a metal cap that surrounds the entire end of the hose. Not to be confused with AN fittings which are hex shaped (the Supra doesn't have any of these stock anyway, so no worries). __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

04-11-2012, 06:47 PM	#9
2fast4u 3" Exhaust Join Date: Mar 2012 Location: kent washington Posts: 57 Blog Entries: 1	mk3 supra power steering they both have those clamps that you use your fingers or pliers. both of the line thats on the canister have those __________________ 2 fast 4 u

04-11-2012, 07:15 PM	#10
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	I'm sorry... I was thinking on the compressor. The reservoir sits in the middle of the low pressure line. I believe you want the one which runs to the cooler, not the pump. http://www.cygnusx1.net/Supra/Librar...spx?F=4503&P=1 __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

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