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Old 04-03-2011, 05:36 PM   #1 (permalink)
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Default Forester - Transmission fluid change ??

The question is rather simple; how to change the transmission fluid. I found the plug and it would appear I do the following:
[LIST=1][*]get vehicle to operating temp[*]pull onto a level surface[*]shut down the vehicle[*]pull the plug and let it drain[*]refill via the dipstick tube

am I missing anything??

Thanks, FishnFed
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Old 04-03-2011, 05:46 PM   #2 (permalink)
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Nope, that's all there is to it. Just make sure you have the right plug, the right fluid, and the right dipstick.
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Old 04-03-2011, 09:00 PM   #3 (permalink)
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Yup. The Subaru HP fluid is odd. There are no aftermarket fluids that Subaru lists as meeting th HP spec, but Valvoline Maxlife, Redline, Amsoil, and Royal Purple all say they "meet or exceed" specs for Subaru HP ATF.
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Old 04-03-2011, 11:19 PM   #4 (permalink)
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is it better to drain when the fluid is hot right after shutting off so the fluid level stick is on the "hot" temp

-or-

wait til it fully cools down and then let it drain so your on the "cold" fluid level


what im basically asking is what is easier to read the levels in? and/or what is more ACCURATE in the fluid level readings because when you fill the transmission fluid it will be at room temp and not "hot" so would the fluid be on the "cold" level of the stick if we immediately filled the transmission?
does that make sense?
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Old 04-04-2011, 03:07 AM   #5 (permalink)
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Quote:
Originally Posted by cnunez13 View Post
i

wait til it fully cools down and then let it drain so your on the "cold" fluid level
Conventional wisdom is to always drain oil hot so it carries more deposits with it. Not sure this really occurs.

Don't forget that you can't check the level unless the vehicle runs,

In the subaru's that had the external filter you would drain about 6 ounces short of a gallon. That may or not be accurate. If you don't want to measure it, add that amount and then run the vehicle. Move the shifter through all the positions. Then check it, running. Note you will use the side of the dipstick that is for the cold reading. Its not totally accurate but close enough.

Check it again hot/running.
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Old 04-11-2011, 05:52 PM   #6 (permalink)
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per the local subaru dealership, I need 3.5 quarts at $12.75 per quart.
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Old 04-11-2011, 06:51 PM   #7 (permalink)
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Manual = Gear oil
Auto = Tansmission fluid.

Which do you have?
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Old 04-11-2011, 07:44 PM   #8 (permalink)
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where you been since your first post 12-13-2009???

Did you see this thread?
Subaru Forester ATF Drain and Fill Guide

Quote:
Originally Posted by FishnFed View Post
per the local subaru dealership, I need 3.5 quarts at $12.75 per quart.
too high

I paid $20 for 4 qt...CASH DEAL
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Old 04-16-2011, 10:35 AM   #9 (permalink)
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Thanks for the input. This was easier than driving it to my dealership to have it done. Subaru did a wise thing with the tranny plug so easy to get to. Now if I can only find the spot LoveSubaru gets 4 quarts for $20.........
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Old 04-16-2011, 11:13 AM   #10 (permalink)
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Quote:
Originally Posted by FishnFed View Post
per the local subaru dealership, I need 3.5 quarts at $12.75 per quart.
Might be worth checking around with our supporting vendors or other places. Fred Beans sells it for $6/qt plus shipping.

HTH,
Jim / crewzer
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Old 02-11-2014, 05:43 PM   #11 (permalink)
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Default Auto Transmission fluid change

Sounds like you folks don't know that draining tranny is not like draining engine oil which drains by gravity (BMWs excepted these days). About 90% of tranny fluid is sitting in the torque converter and other non-drainable spots. Gravity draining by opening the screw or even dropping the pan simply won't work and is a waste of time and money. Draining via the tranny plug is like changing your engine oil by unscrewing the oil plug for about 2 seconds then screwing it back in and calling that an oil change. Tranny fluid changes need to be pressure flushed with a special shop machine that most good shops like Subaru should have. The machine forces new tranny fluid through your tranny and into the machine and flushes out all the old fluid till the clear lines show clean fluid is now in the tranny. That is the one and only way to do this right.
There are millions of cars on the road with trannys that are running with cruddy old burnt out tranny fluid because most quick lube shops people use don't have the equipment and/or technical skills to do this job right but they take your money to drain 10% of your fluid and call it a day. Anything but a pressure flush with this machine is a complete waste. Love your car? Spend $100 and do it right.
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Old 02-11-2014, 06:07 PM   #12 (permalink)
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Quote:
Originally Posted by Majauskasson View Post
Sounds like you folks don't know that draining tranny is not like draining engine oil which drains by gravity That is the one and only way to do this right. . Anything but a pressure flush with this machine is a complete waste. Love your car? Spend $100 and do it right.
Ummmmm...thanks and welcome to the board.
But..
I beg to differ...draining gets you about a 35% change. So 3 changes gets you in the high 80% and 4 gets you into the 90's. Its simple and unlike power flushes which can lead to bad things, like intrusion where you don't want it. Also the flush may be done with a contaminated machine operated by idiots.

ATF lasts a good long time and doing a drain and fill every 15K miles will allow your tranny oil to survive for easily 200K miles. I have been doing this method for years and after 100K miles my ATF was in great shape. But, whatever.
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Old 02-11-2014, 06:17 PM   #13 (permalink)
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^this. Do three drain and fills in quick succession and your fluid is pretty much new.
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Old 02-11-2014, 06:31 PM   #14 (permalink)
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Quote:
Originally Posted by AWDFTW View Post
Yup. The Subaru HP fluid is odd. There are no aftermarket fluids that Subaru lists as meeting th HP spec, but Valvoline Maxlife, Redline, Amsoil, and Royal Purple all say they "meet or exceed" specs for Subaru HP ATF.
It says in the dealer repair manual that Nissan j-spec fluid is a suitable supplement, and castrol transmax meets this requirement. So that is another option for fluid as well.
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Old 02-16-2014, 07:22 PM   #15 (permalink)
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So, a few fluid drains in quick successions and new tranny fluid? I hate to be the one to ask....but how quick of succession? Couple days? Few hundred K?

Thanks.



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