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Old 04-16-2005, 07:36 PM   #1
dcwrx2
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Default Drain and refill A/T tranny oil in-between each full tranny oil flush?

I was told it is recommended (especially for 4eat) to drain and refill tranny oil in-between each factory scheduled tranny oil flush, because it is healthier to the 4eat trans, and also drain from tranny oil drain plug will only give me 4-5 quarts (instead of all 10 quarts) so it is not messy, economic to refill with 4-5 quarts fresh tranny oil, and as simple as regular engine oil change.
Is anyone doing the same thing? I wanna know if draining A/T tranny oil from the drain plug will really drain out 4-5 quarts rather than 8-9 quarts...
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Old 04-16-2005, 07:47 PM   #2
orndog
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It won't drain the torque converter or trans cooler, so no, it won't drain all of the fluid.
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Old 04-16-2005, 10:40 PM   #3
dcwrx2
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Does stock 4eat WRX have trans cooler?
So the max amount I can drain thru the drain plug is how much?
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Old 04-16-2005, 11:11 PM   #4
OneOBS
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Yes, all autos have coolers. Its like 4.5 quarts or so.
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Old 04-17-2005, 03:32 AM   #5
dcwrx2
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But ppl are saying if mod the torque converter to a high-stall speed one, then need a trans oil cooler.... Do they mean to add an extra cooler, or replace the stock one with aftermarket one?
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Old 02-24-2009, 12:53 PM   #6
slwmatc
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Quote:
Originally Posted by dcwrx2 View Post
But ppl are saying if mod the torque converter to a high-stall speed one, then need a trans oil cooler.... Do they mean to add an extra cooler, or replace the stock one with aftermarket one?
^
The 02-05 wrx's come with the built in tranny cooler in duh radiator; however if ones was to upgrade the TC in the 4EAT then one needs to purchase an external tranny cooler to either mount in front of the A/C condensor; bypass the hoses from the tranny to ur new tranny cooler and plug up the old ones from the radiator; of course i have heard and seen AT subys using dual coolage from the stock radiator and the AM- tranny cooler; hope this helps.
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Old 02-24-2009, 05:06 PM   #7
dcwrx2
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Wow this thread is old... ;-)
Yeah, after my last post, I did the TC (and VB) mod w/ an external Hayden ATF cooler. I'm running both cooler (Hayden + radiator-cooling) in my setup w/ Amsoil ATF.
It's been 70k+ miles on this setup and no problem so far. I did have ATF drain (4 Qts) & refill at every 30k miles.
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Old 02-24-2009, 05:26 PM   #8
slwmatc
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evry 30,000 mile, i thought it was 15,000?
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Old 02-25-2009, 04:30 PM   #9
dcwrx2
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You can rely on Amsoil's quality. 15k drain & refill is a bit overkill =)
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