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Old 03-22-2008, 11:19 AM   #1
Padge
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Default Can you top off transmission fluid or do you need to completely flush it?

My fluid is low and I dont have time today to flush and refill before traveling home. Im sure itll be fine, but now that I know its low ill be nervous.

Can it be topped off or do I have to do a complete flush? I have no idea what fluid is in there now.

Thanks.
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Old 03-22-2008, 11:56 AM   #2
daveyboy
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Topping it off with a quality 75w/90 would be a good idea if you are going to be travelling.
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Old 03-24-2008, 08:02 AM   #3
Padge
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do i just get a long funnel and enter it in where the dipstick is?
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Old 03-24-2008, 08:57 AM   #4
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Quote:
Originally Posted by Padge View Post
do i just get a long funnel and enter it in where the dipstick is?

yes. You don't have to remove the intercooler if, like you said, use a long funnel. Just fill slowly so you don't overfill and have to drain it all out.
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Old 03-24-2008, 09:37 AM   #5
Padge
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right now im at "L" or low... so any idea how much I could need?

1 qt?
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Old 03-24-2008, 01:00 PM   #6
ballitch
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Probably 1 qt. but you could always buy 2 qts. and have some extra for a rainy day.



~Josh~
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Old 03-24-2008, 01:50 PM   #7
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And it would probably be a good idea to go slow, add some, check dipstick, add some more, etc.
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Old 03-28-2008, 04:37 PM   #8
Asinine
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You're worried about the wrong thing. No harm can come of adding additional gear oil to keep your level in spec (especially if you're adding the exact same oil as is in there already). At least, no more harm that running low.

What you should be worried about is: why am I losing gear oil???
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Old 03-28-2008, 07:10 PM   #9
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so its ok to mix any brand of oil?
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Old 03-29-2008, 12:54 AM   #10
magnum2066
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My personal opinion is that flushing transmissions, although now cleaner after the surface, will cause transmissions to bomb within the next few thousand miles.
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Old 03-29-2008, 01:36 AM   #11
Engmus
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Depends on the flush, and thats simply not true for manual transmissions.
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Old 03-29-2008, 09:14 AM   #12
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Quote:
Originally Posted by Asinine View Post
What you should be worried about is: why am I losing gear oil???
That's what I was thinking, too!

If this is a manual, you don't "flush" the transmission - just drain and fill (and topping off is just fine)

If it's an automatic, and the fluid is in good shape (not burnt), I would not do a flush. They can cause more problems than they cure (some manufacturers, such as Honda, strongly recommend against them - the procedure Honda specifies is repeated drain/fill cycles (5 of them - for our Odyssey, that gets a bit over 90% replaced)
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Old 03-29-2008, 07:08 PM   #13
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Quote:
so its ok to mix any brand of oil?
Subaru discourages it, but not as much as they'd discourage running below the "L" line There are a lot of cocktails in use, but those aren't just randomly selected oils.
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Old 05-02-2008, 07:20 PM   #14
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Thanks for this info. I was just searching for this as my car is running low on tranny oil.
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