Do you think TRANSMISSION DRAIN AND FILLS are necessary? - Taurus Car Club of America : Ford Taurus Forum
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post #1 of 24 (permalink) Old 08-20-2016, 07:28 PM Thread Starter
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Do you think TRANSMISSION DRAIN AND FILLS are necessary?

Just wanted a few opinions, do you al think Transmission Drain and Fills are really necessary to keep your transmission healthy?
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post #2 of 24 (permalink) Old 08-20-2016, 07:53 PM
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Quote:
Originally Posted by Science View Post
Just wanted a few opinions, do you al think Transmission Drain and Fills are really necessary to keep your transmission healthy?
Ford says to do that every 30K. The friction modifiers do wear out and wear materials from the clutches get into the fluid. I suck the fluid out the dipstick tube, put it in used 5Q oil jugs and note how much came out. Then put back what I removed. I pull the vent cap off to add fluid, makes it go down faster. Need a special funnel for that. Remember to put the vent cap back on the proper way. Should be wobbly loose. Exchange takes me ~30 minutes.

Ford says 150K on the filter. I can live with that.

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post #3 of 24 (permalink) Old 08-20-2016, 09:12 PM
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Hard not to think the fluid change is not a good idea when you see how everything has the blackish coating on it.
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post #4 of 24 (permalink) Old 08-20-2016, 09:49 PM
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Fluid is not a 'lifetime' item and therefore NEEDS to be changed at recommended intervals. So yes, they are necessary to keep a transmission healthy, and anyone who says differently shouldn't be.

John
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post #5 of 24 (permalink) Old 08-20-2016, 10:51 PM
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Absolutely and even a casual perusal of the forum would have answered the question 100 fold. The AX4N is the Achilles heel of a Tec equipped Bull
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post #6 of 24 (permalink) Old 08-21-2016, 08:35 AM
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My old '00 wagon went 212k miles on the original trans. with 50k fluid changes. Sold that car and of last year still on the road. My old '99 Yukon went 190k miles on same schedule and it towed trailers. Sold it and still on the road.
At the junkyard I'll guarantee every non crashed higher mileage car you see there is there due to a blown trans. that was never properly maintained.

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post #7 of 24 (permalink) Old 08-21-2016, 09:10 AM
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I've always performed a pan drop, filter change & Full tranny fluid pump out at 30-35K mile intervals on our short tripped/severe service trannies & am always rewarded with improved shift feel. The 94 3.8L Taurus AXODE & 99 4.0L Ranger 5R55E tranny's are still with us without repair so far. The Taurus is short tripped around town, the Ranger tows my bass boat over & through the Blue Ridge Mtns 60 miles each round trip. I use oem tranny filters & licensed tranny fluids. So, yes as has been said, it's wise to change the tranny fluid & filter on a scheduled basis & imo perform a Full fluid pump out, so the old fluid isn't weakening the new fluids ad pack. Base oils get sheared & ad packs get depleted & the fluid gets contaminated with wear materials & other putrids that the filter won't remove. A tranny fluid UOA can determine how we're doing, but that'll cost about half of what a fluid & filter service we can do ourselves, would cost.

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post #8 of 24 (permalink) Old 08-21-2016, 11:11 AM
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Not trying to hijack this post. I need to to this soon myself any brands of fluid/filters go for?
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post #9 of 24 (permalink) Old 08-21-2016, 12:32 PM
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Quote:
Originally Posted by Science View Post
Just wanted a few opinions, do you al think Transmission Drain and Fills are really necessary to keep your transmission healthy?
The Taurus definitely benefits from PROPER transmission service. This means approved fluid and filling to the correct level.

The 30k / 3 year change is not a drain and fill but a line off exchange. In my experience, this interval seems right.

Like chart though, I've decided to do periodic drain and fills through the dipstick (I have a Mityvac). I have a spreadsheet where I calculated that 10k miles for a 50% drain and fill works out to be the same as the 30k mile full exchange.

I have used 3 different Mercon V brands and monitored transmission temperatures and right now think the Valvoline Mercon V (not technically approved) is better than the Motorcraft Mercon V. The third fluid I used was Pennzoil Multi Vehicle which claimed to meet Mercon V. I only had 6 quarts and used it for a drain and fill and didn't like the results when it mixed with the Motorcraft.

I've recorded lower temperature with the Valvoline Mercon V and this would technically mean it would last longer. But many believe the important thing is to perform the change to remove debris. My UOA on Mercon V showed it was in good condition at 16k miles but that it held a lot of wear debris.

It is probably overkill to do a drain and fill every 10k miles or sometimes sooner, as I do. Many here have long lasting transmissions with drain and fills (not full exchanges) every 30k miles or even longer. But since I have over 50 quarts of Valvoline Mercon V that I got for $1 a quart, there is very little downside for me personally if I do 10k miles or less drain and fills.

Lastly, I happen to believe that most mechanical failures are because of sloppy mechanics using the wrong fluid or leaving fluids at the wrong level. Enthusiasts are less likely to make those mistakes and on weakly engineered parts like the Taurus transmission, that may be one reason that on this forum you find long lasting transmissions with basic maintenance. In the rest of the world, it seems your Taurus transmission has as much chance of lasting if you leave it alone or ask a mechanic to service it.

Last edited by rjacket; 08-21-2016 at 12:42 PM.
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post #10 of 24 (permalink) Old 08-21-2016, 12:35 PM
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Quote:
Originally Posted by jaysmith View Post
Not trying to hijack this post. I need to to this soon myself any brands of fluid/filters go for?
Any approved Mercon V.

I'm happy with the non approved "Valvoline for Mercon V". Didn't like Pennzoil Multi Vehicle. Others swear by Maxlife. Supertech Mercon V smells awful!

The Motorcraft filter is made by Filtran. They probably make it for several other brands as well, so any major filter brand will be ok if you find the Motorcraft is costing twice as much.

But it only needs changing every 120k miles ..........
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