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Old 08-10-2017, 12:50 PM   #1
ktm450
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Default 1993 940 T trans flush, is dex/merc ok?

I am just getting ready to do the flush, and the wife comes home with Castrol dex/merc. That is all they have now at the local wallymart, no dex3. I seem to remember them coming out with this combo as the only option. Is this ok for my auto trans?
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Old 08-10-2017, 12:53 PM   #2
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I use regular Valvoline dex/merc ATF for my AW70.
There is a reason I don't use synthetic in the A/T.
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Old 08-10-2017, 12:54 PM   #3
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Yes that is ok for your transmission.

http://www.castrol.com/en_cc/ccsa/pr...-dex-merc.html
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Old 08-10-2017, 01:00 PM   #4
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Wow, thanks for the quick replies guys! I had her get 3 gallons. One cheapo, 2 of the castrol dex/merc. Is this enough?
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Old 08-10-2017, 01:14 PM   #5
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12 quarts, 1-2 quart at the time flush through radiator. Also draining through pan plug is good too to start with, so get all the crap from bottom.
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Old 08-10-2017, 01:18 PM   #6
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I just watched a youtube where dude ran 5 gallons through his 240. I thought this sounded a bit extreme. Thanks!
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Old 08-10-2017, 02:04 PM   #7
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Originally Posted by ktm450 View Post
I just watched a youtube where dude ran 5 gallons through his 240. I thought this sounded a bit extreme. Thanks!
That guy is an idiot. Also, don't shop at Walmart.
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Old 08-10-2017, 02:45 PM   #8
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I put 5 gallons through my 4 runner after dropping the pan and changing the filter. I kept flushing until it came out purty red though took almost all of 5 gallons.
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Old 08-10-2017, 03:09 PM   #9
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3 gallons is fine, so is dex/merc.

Suggestion if it is a new to you ride. Run the cgeap stuff thru until it comes out clean, drive it a week, flush with the castrol, drive a month, flush again, call it good.
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Old 08-10-2017, 04:06 PM   #10
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Suggest the IPD flush kit.... mine has served well, price is not obscene and includes instructions!

2nd what Gary said.... flush with the cheapo, drive her a week, flush to the best. ATF is not a place to pinch pennies, unless you enjoy wrestling transmissions in/out........
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Old 08-10-2017, 06:28 PM   #11
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Quote:
Originally Posted by DET17 View Post
Suggest the IPD flush kit.... mine has served well, price is not obscene and includes instructions!

2nd what Gary said.... flush with the cheapo, drive her a week, flush to the best. ATF is not a place to pinch pennies, unless you enjoy wrestling transmissions in/out........
Just cut the end off of a transmission line on a 2/7/9.
Get 4 feet of vinyl tubing and clamp it onto the tranny line ya cut off....diy and done.


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Old 08-10-2017, 10:34 PM   #12
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Just cut the end off of a transmission line on a 2/7/9.
Get 4 feet of vinyl tubing and clamp it onto the tranny line ya cut off....diy and done.


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Was that a serious suggestion?
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Old 08-10-2017, 10:37 PM   #13
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Quote:
Originally Posted by 940wagon View Post
Was that a serious suggestion?
I have a feeling prices on crack dropped recently as I can see some outstanding posts on TB.
I think guy meant a short version of how to fix leaky trans cooling line, out of nowhere.

Everything was said here and everywhere else about flush. OP can proceed.
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Old 08-10-2017, 10:42 PM   #14
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Quote:
Originally Posted by 940wagon View Post
Was that a serious suggestion?
Actually works like a charm if you're in a pinch, and don't go the IPD route. Plus enough hose to put it by the door so you can monitor it.
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Old 08-10-2017, 10:43 PM   #15
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Actually works like a charm if you're in a pinch, and don't go the IPD route.
SO he meant disconnect instead of cut? got me there
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Old 08-10-2017, 10:45 PM   #16
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Quote:
Originally Posted by 940wagon View Post
Was that a serious suggestion?
Quote:
Originally Posted by smeha View Post
I have a feeling prices on crack dropped recently as I can see some outstanding posts on TB.
I think guy meant a short version of how to fix leaky trans cooling line, out of nowhere.

Everything was said here and everywhere else about flush. OP can proceed.
There is nothing wrong with said suggestion

I have a feeling that the prices on smug are down
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Old 08-10-2017, 10:47 PM   #17
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Quote:
Originally Posted by smeha View Post
SO he meant disconnect instead of cut? got me there
To make a flush hose? You cut the trans line on a junkyard 2/7/9 at the radiator and attach clear hose to it.
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Old 08-10-2017, 10:48 PM   #18
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My mechanics usually tell me on my 92 960 to never flush the transmission, only drain and refill. Something about the gear filings are now an integral part of the transmission and cleaning them out will mean the gears won’t be happy?

Does that make any sense?
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Old 08-10-2017, 10:49 PM   #19
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Originally Posted by stiligFox View Post
My mechanics usually tell me on my 92 960 to never flush the transmission, only drain and refill. Something about the gear filings are now an integral part of the transmission and cleaning them out will mean the gears won’t be happy?

Does hat make any sense?
if your transmission is so bad that a flush will kill it, it is about to die anyway
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Old 08-10-2017, 10:51 PM   #20
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Quote:
Originally Posted by stiligFox View Post
My mechanics usually tell me on my 92 960 to never flush the transmission, only drain and refill. Something about the gear filings are now an integral part of the transmission and cleaning them out will mean the gears won’t be happy?

Does hat make any sense?
It does if there's a lot of miles. Flush is fine. Changing the filter or cleaning the screen may kill it faster if high mileage. I didn't change mine, but I did flush.
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Old 08-11-2017, 01:10 AM   #21
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Nearing almost 300k on the trans in my wagon, flushes every 30k or so with the method I posted above, no issues, and it gets abused. What the tech may have been referring to is a POEWR flush, which can indeed cause issues on a worn trans. There is some logic to it, depending on the overall condition of the trans.
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Old 08-11-2017, 02:55 AM   #22
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Not overly complicated to do the trans flush. Use a hose, run it into a container. I use a 15mm wrench. It doesn't require special tools.

* after flushing you can install what you like/want
* advised on this forum to install Dex VI Sythetic (sorry correction) works well for me
* near kaput AW70, after a couple flushes & adding Dex VI synthetic it feels fixed/improved
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Old 08-11-2017, 05:09 AM   #23
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Thanks for the advise guys! Good luck ktm450, let us know how it goes!
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Old 08-11-2017, 09:33 AM   #24
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Quote:
Originally Posted by VB242 View Post
I put 5 gallons through my 4 runner after dropping the pan and changing the filter. I kept flushing until it came out purty red though took almost all of 5 gallons.
I would say that yours is the exception. I've never had to use anywhere near five gallons for a flush.
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Old 08-11-2017, 09:40 AM   #25
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^ I bought a case of ATF from napa and only ended up using half the bottles before it came out nice and red when I had the aw70
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