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Open Roads Forum  >  Tow Vehicles

 > 2002 Ford E350 V10 Transmission Fluid

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fourthclassC

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Posted: 09/25/20 08:45am Link  |  Quote  |  Print  |  Notify Moderator

OP here. Thanks for all the advice and suggestions. One thing I am not going to do is have the transmission flushed. I believe this is not necessary and can cause issues that did not exixt. displacing sludge, causing shifting issues and possilble leaks.......

ACZL

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Posted: 09/25/20 08:49am Link  |  Quote  |  Print  |  Notify Moderator

agesilaus wrote:

Ford is recommending a transmission flush, is this just a money making scheme for their maintenance shops and is just changing the fluid and filter enough?


You could look at it a couple ways. 1. Yes. 2. No. For yes, they want top dollar for things and to have a spiffy joint and all. But it doesn't hurt to have it done say every other 30k interval if you tow a lot. As for no, oil is cheap insurance and flushing it will remove all crud and all. I know Ford says to go quite a ways out on tranny service, but I'm stuck in my old fashion ways and will have it done every 30k regardless.


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Posted: 09/25/20 09:46am Link  |  Quote  |  Print  |  Notify Moderator

ACZL wrote:

agesilaus wrote:

Ford is recommending a transmission flush, is this just a money making scheme for their maintenance shops and is just changing the fluid and filter enough?


You could look at it a couple ways. 1. Yes. 2. No. For yes, they want top dollar for things and to have a spiffy joint and all. But it doesn't hurt to have it done say every other 30k interval if you tow a lot. As for no, oil is cheap insurance and flushing it will remove all crud and all. I know Ford says to go quite a ways out on tranny service, but I'm stuck in my old fashion ways and will have it done every 30k regardless.



Pretty sure we are talking the 4R100 here. Should be a youtube video out there how to change them, I did several times on my 99 Superduty. not flushing , but still replacing all the fluid .

kellem

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Posted: 09/25/20 12:02pm Link  |  Quote  |  Print  |  Notify Moderator

If your old enough you've likely heard that flushing an older transmission can lead to it's demise, had it happen, blew inside of a week.

When experiencing discolored fluid, I simply find a return line and let the transmission pump out the old while I'm adding new....turns pink, your done.

When a transmission hasn't been neglected a simple filter change and refill has always been effective. Ymmv

carringb

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Posted: 09/25/20 01:10pm Link  |  Quote  |  Print  |  Notify Moderator

Mercon-V is a synthetic fluid. I’ve always run Napa Mercon-V, doing a full “bucket flush” every 100,000 or so. Just did it again a couple weeks ago @ 490,000 using MaxLife for the first time only because it ended up being cheaper this time. I no longer drop the pan, and instead use a Magnefine inline filter.


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Posted: 09/25/20 03:33pm Link  |  Quote  |  Print  |  Notify Moderator

My best advice to you or anyone is to not try to change out or service your own transmission. Only a professional transmission shop can get all of the old oil out of transmission properly. I learned the hard way and it just is not worth it. I am talking about automatic transmissions.

After many months of studying I started using Amsoil in all my trucks and cars many years ago. I use to commute 114 miles a day and a total of over 800,000 miles over 24 year span.

Normal transmission fluid is only good for approximately 240 degrees. Amsoil is good for a around 435 degrees. Look up the specification on Amsoil's web site. I do not sell Amsoil but I have used it for about 30 years. Payed $65,000 for my new 2017 Ford 350 dually and yes I use Amsoil in it. I use and like the Bypass filtration systems Amsoil offers and I do use them. Don's Oil web site offers a outstanding rock guard.

Please hire a professional to do the transmission service and you will glad you did.

PS: Check around, you will post likely be able to purchase Amsoil directly or locally or on line. Check for service shops that offers Amsoil. You can also talk to the service shop, purchase Amsoil and have the shop put it in.


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Posted: 09/25/20 06:05pm Link  |  Quote  |  Print  |  Notify Moderator

A flush is OK as long as it used the transmission pump to move it through the trans. If the fluid isn’t burnt and is serviced regularly then a pan drip with filter is all that is necessary! And it’s nice to drop the pan to see how the inside of the trans is (mental chunks or clutch debris).


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Chum lee

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Posted: 09/26/20 06:14am Link  |  Quote  |  Print  |  Notify Moderator

agesilaus wrote:

Ford is recommending a transmission flush, is this just a money making scheme for their maintenance shops and is just changing the fluid and filter enough?


More likely, Ford, or, "Ford Motor Company" is not recommending an automatic transmission fluid flush. The Ford Dealer is. Two different things. Over the years, the engineers and technical writers at Ford Motor Company have been pretty clear about how/when (and what fluid to use) to change the ATF. It's clearly written on placards in the vehicle, in their owners manuals, factory service/repair manuals, technical service bulletins, and service advisory circulars. If you prefer (not to do your homework) to get your education/information from some highly commissioned, agenda driven, knuckle dragging porch monkey internet trolls, well then, you'll get what you deserve.

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* This post was last edited 09/30/20 06:29pm by Chum lee *   View edit history

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Posted: 09/26/20 07:14am Link  |  Quote  |  Print  |  Notify Moderator

kellem wrote:

If your old enough you've likely heard that flushing an older transmission can lead to it's demise, had it happen, blew inside of a week.

When experiencing discolored fluid, I simply find a return line and let the transmission pump out the old while I'm adding new....turns pink, your done.

When a transmission hasn't been neglected a simple filter change and refill has always been effective. Ymmv
This is what I do every 30k miles. Drain change fluid in pan and filter use existing OEM gasket(replacement gaskets are rubber and can cause leaks) I dip a white paper towel fresh transmission fluid remove return line pump out old fluid out of TC. Check fluid coming out with paper towel and compare it to new fluid, when it looks the same just top off fluid and you are done.

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Posted: 09/26/20 11:09am Link  |  Quote  |  Print  |  Notify Moderator

Chum lee wrote:

agesilaus wrote:

Ford is recommending a transmission flush, is this just a money making scheme for their maintenance shops and is just changing the fluid and filter enough?


Most likely, "Ford" is not recommending a transmission flush. The Ford Dealer is. Two different things. Over the years, Ford has been pretty clear about how to change the ATF. It's clearly written in their service manuals.

Chum lee


Very important distinction there!


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