Transsynd change over

[jojo]

165K on the clock on my truck/allison transmission. Bought the truck 2k miles ago. Have no idea how many miles the transmission oil has currently. I did find that the stock dipstick tube was cracked when I removed it in order to install a down pipe. I have no clue how long that dipstick tube was cracked for, but I do know that the truck lived on a farm and dust/dirt was plentiful.

I bought some 12 quarts of transsynd to change over from what I think is dextron in case currently.

Before I change out oil tomorrow, should I buy an internal pan filter that I forgot to buy?

Second, what recommendation would be given in order to get most of the old trans oil out to get most of the transsynd in?

 

[Mike L.]

Drop the pan and change internal filter and add about 7qts of fluid. Drive it a while and pull drain plug off pan and drain. add another 7qts or so. That will constitute a full flush. Don't overfill.

 

[jojo]

Will do. Thank you Mike.

 

[BADLUK007]

Is it necessary to do an internal filter change when switching to transynd at 60k miles?

 

[S Phinney]

I would. You should be changing it at 75 k anyways.

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[BADLUK007]

I would. You should be changing it at 75 k anyways.

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From what seems like days of research, I was under the impression the internal filter wasn't to be change until you needed a rebuild. I guess it's back to the drawing board to figure this out. I've got 6 gallons and some spin on filters ready to be used in the garage

 

[mike diesel]

From what seems like days of research, I was under the impression the internal filter wasn't to be change until you needed a rebuild. I guess it's back to the drawing board to figure this out. I've got 6 gallons and some spin on filters ready to be used in the garage

Internal filter is $20 from Allison. Change it.

If it wasn't meant to be changed, it wouldn't be an actual mesh filter media.

 

[PACougar]

From what seems like days of research, I was under the impression the internal filter wasn't to be change until you needed a rebuild. I guess it's back to the drawing board to figure this out. I've got 6 gallons and some spin on filters ready to be used in the garage

Waiting to change the internal filter until you need a rebuild is a good way to need a rebuild in the first place. Honestly, filters are dirt cheap and so simple to do, why would you ever consider not doing it.

 

[Mike L.]

From what seems like days of research, I was under the impression the internal filter wasn't to be change until you needed a rebuild. I guess it's back to the drawing board to figure this out. I've got 6 gallons and some spin on filters ready to be used in the garage

I'd hate to see how you would handle a big project like changing windshield wipers. :roflmao:

 

[Awenta]

It doesn't seem like you're comfortable doing this. Have a friend or someone who knows what they're doing help you. It's very simple. You're over thinking this.

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[BADLUK007]

Internal filter is $20 from Allison. Change it.

If it wasn't meant to be changed, it wouldn't be an actual mesh filter media.

Gotchya, thanks.

Waiting to change the internal filter until you need a rebuild is a good way to need a rebuild in the first place. Honestly, filters are dirt cheap and so simple to do, why would you ever consider not doing it.

I wouldn't if it's necessary, it's just what I've read so far. I just want to do what's in the best interest for my truck, I've never owned an automatic anything.

I'd hate to see how you would handle a big project like changing windshield wipers.

Daaaaaaaaaaang, that was a good one. I'm going to go cut my wrist and lay in the bathtub now.

It doesn't seem like you're comfortable doing this. Have a friend or someone who knows what they're doing help you. It's very simple. You're over thinking this.

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So from one small paragraph about me trying to confirm what I've read, I'm no longer comfortable doing my own maintenance work? I am probably over thinking it a bit but, if I didn't I'd have just stopped at "Allison doesn't recommend the internal Trans filter until a rebuild is needed." and I'd be screwed. I'll continue to over think and ask questions. I'll do what's in the best interest of the vehicle and not spend money unnecessarily if I can avoid it. If the truck needs it, it needs it. Just trying to learn and do my due diligence.

No need to get a hate band wagon going.

 

[c20elephant]

Gotchya, thanks.



So from one small paragraph about me trying to confirm what I've read, I'm no longer comfortable doing my own maintenance work? I am probably over thinking it a bit but, if I didn't I'd have just stopped at "Allison doesn't recommend the internal Trans filter until a rebuild is needed." and I'd be screwed. I'll continue to over think and ask questions. I'll do what's in the best interest of the vehicle and not spend money unnecessarily if I can avoid it. If the truck needs it, it needs it. Just trying to learn and do my due diligence.

Couple quotes from another site regarding the internal filter...

It's more of a screen than a filter, but @100k service it's not a bad thing to pull it (insert new), as you'll get more fluid to drain out vs pulling the plug and/or dropping the pan.

No it's not. It has a filter element inside. The screen went away in 2002.

Definitely disagree. I did regular spin filter changes every other oil change and decided at 125k, I'd take it to Mike L. and have his crew service it and give it a look over.

After Mike took me to the back and showed me how the internal was 'sucked into itself', I now make it a habit to go no longer than 75k between internal filter changes.

 

[BADLUK007]

Couple quotes from another site regarding the internal filter...

Perfect, I was only getting the first part of the info and not the post 2002 / filter inverting into itself. Thanks for taking the time to show me this.

 

[southco]

I read that the internal filter only needed changing when rebuilding too... And on here I believe. I have been changing the external trans filter every oil change (every 4K miles). I just turned 96k on my LBZ but I will change it this spring. Mine is not my daily so I'll wait for some warmer weather. Anybody care to post a Allison part number?

Oh and OP I use Transynd from a forum vendor... Have been happy with it

 

[Mike L.]

Listen up guys.
Allison recommendations are for slow underpowered trucks that travel at slow speeds and tow big. I still don't agree with them as far as servicing the internal filter.
We are running high performance trucks that shed more clutch material because of tq output. The filter needs to be changed more often. Another point is knowing what is going on in your Allison. peeling open ( not cutting ) your sump filter will tell you if something is going on. If you are a true performance person, you will want to know. If you are a stupid factory maintenance reader; GTFO.
Changing the spin on is for the valve body and solenoids only. It is a low pressure ( 125 psi max ) filter and has nothing to do with the main trans itself.
For those of you that keep posting this stupid shit about never changing your sump filter; you have no problem buying a shit load of beer and pissing it away with nothing to show for it but a head ache. But changing a sump filter is a no no. Give me a F---g break.

If one of you neophites posts an argument to this post, I will ban you. Don't need stupid people here.:thumb:

 

[TeaBagger2006]

You don't know squat Mike!!!

 

[Mike L.]

You don't know squat Mike!!!

I love you too.:thumb::hug:

 

[S Phinney]

But he does know trannys!

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[southco]

Listen up guys.

Allison recommendations are for slow underpowered trucks that travel at slow speeds and tow big. I still don't agree with them as far as servicing the internal filter.

We are running high performance trucks that shed more clutch material because of tq output. The filter needs to be changed more often. Another point is knowing what is going on in your Allison. peeling open ( not cutting ) your sump filter will tell you if something is going on. If you are a true performance person, you will want to know. If you are a stupid factory maintenance reader; GTFO.

Changing the spin on is for the valve body and solenoids only. It is a low pressure ( 125 psi max ) filter and has nothing to do with the main trans itself.

For those of you that keep posting this stupid shit about never changing your sump filter; you have no problem buying a shit load of beer and pissing it away with nothing to show for it but a head ache. But changing a sump filter is a no no. Give me a F---g break.



If one of you neophites posts an argument to this post, I will ban you. Don't need stupid people here.:thumb:

So was this aimed at me? I have bone stock LBZ under 100k miles. Tow a camper that weighs well under 10k pounds 6-7 times a year. Otherwise it sits or is used as a weekend toy. I can afford to have a DD that is not my diesel truck. I've never read on here that the internal filter is so important. I know you know your sh!t Mike. So not a challenge but relax a little. Some of us are still learning even after being here for a few years.. Lol. I'm going to changed that internal filter before the next tow.

 

[Dukcaln]

So was this aimed at me? I have bone stock LBZ under 100k miles. Tow a camper that weighs well under 10k pounds 6-7 times a year. Otherwise it sits or is used as a weekend toy. I can afford to have a DD that is not my diesel truck. I've never read on here that the internal filter is so important. I know you know your sh!t Mike. So not a challenge but relax a little. Some of us are still learning even after being here for a few years.. Lol. I'm going to changed that internal filter before the next tow.

sometimes right, but well said