2001 Allison Heavy Duty 1000 Series(i Think)

[kurt1993]

Id like to Change my Trans Fluid in my 2001 Gmc Sierra 2500HD with the Allison im not so sure as to what fluid it uses some say ONLY DEX III cause DEX IV is too new one guy said DEX VI? Is Mobil 1 synthetic fine cause its what id like to use.... or can i only use Fluids Direct from Allison or GM?

 

the only reason im posting this in the HD form is because the Allison is in the HD trucks so i think more HD guys would be looking here so please dont move this on me

 

thanks,

 

-Kurt

 

Last resort is to call Allison but i thought id try this first

[RyanbabZ71]

Did the truck come with an owners manual?

[RyanbabZ71]

http://www.allisontransmission.com/service...l&type=1k2k

[kurt1993]

http://www.allisontransmission.com/service...l&type=1k2k

 

thanks im not sure if its a 295 or 389 though

[kurt1993]

Did the truck come with an owners manual?

 

yessir it did manual says use Dex 3 which is outdated so Use Dex VI but i wanna know if Mobil ATF synthetic is okay for use? i just dont know if mine is a 295 or 389

[Shatterz]

Did the truck come with an owners manual?

 

yessir it did manual says use Dex 3 which is outdated so Use Dex VI but i wanna know if Mobil ATF synthetic is okay for use? i just dont know if mine is a 295 or 389

 

 

I know for a fact that Allison recommends TranSynd fluid for all Allison 1000 transmissions, regardless if they call for Dex III or DEX VI. TranSynd is recommend in severe applications, several guys I know have being using it for years with no problems.

[kurt1993]

Did the truck come with an owners manual?

 

yessir it did manual says use Dex 3 which is outdated so Use Dex VI but i wanna know if Mobil ATF synthetic is okay for use? i just dont know if mine is a 295 or 389

 

 

I know for a fact that Allison recommends TranSynd fluid for all Allison 1000 transmissions, regardless if they call for Dex III or DEX VI. TranSynd is recommend in severe applications, several guys I know have being using it for years with no problems.

 

 

is it synthetic?

[Shatterz]

Did the truck come with an owners manual?

 

yessir it did manual says use Dex 3 which is outdated so Use Dex VI but i wanna know if Mobil ATF synthetic is okay for use? i just dont know if mine is a 295 or 389

 

 

I know for a fact that Allison recommends TranSynd fluid for all Allison 1000 transmissions, regardless if they call for Dex III or DEX VI. TranSynd is recommend in severe applications, several guys I know have being using it for years with no problems.

 

 

is it synthetic?

 

 

Absolutely, read more about it on this page

 

Allison TranSynd automatic transmission fluid

[kurt1993]

Did the truck come with an owners manual?

 

yessir it did manual says use Dex 3 which is outdated so Use Dex VI but i wanna know if Mobil ATF synthetic is okay for use? i just dont know if mine is a 295 or 389

 

 

I know for a fact that Allison recommends TranSynd fluid for all Allison 1000 transmissions, regardless if they call for Dex III or DEX VI. TranSynd is recommend in severe applications, several guys I know have being using it for years with no problems.

 

 

is it synthetic?

 

 

Absolutely, read more about it on this page

 

Allison TranSynd automatic transmission fluid

 

 

kool! thank you, i also see that AMSOIL makes a copy of Transynd called Torque Drive 2.5 Gallons is like 107$$ i dont know what the TranSynd goes for? Do you? i mean i guess its cause i dont know if im a big fan on Castrol

[kurt1993]

I just thought id go to Advanced auto and Both Them and My owners Manual say DEX III which Of course means DEX VI should be okay? in the Owners MAN it says Transynd is a Manual Transmission so if i was Unclear my Allison 1000 is Automatic.... still i do see the 295 Recomendation on allisons website and at advanced i discovered ROYAL PURPLE is TES 295 Approved as well as 389. So i think the tranny takes about 20 quarts in the 2500HD royal purple would be 260$$ the transynd is like $100 for 5 gallons i think? how much would it be for a top grade Synthetic DEX III/VI??? and what Brand should i go with For tranny fluid cause i like mobil one everything else

[Shatterz]

I just thought id go to Advanced auto and Both Them and My owners Manual say DEX III which Of course means DEX VI should be okay? in the Owners MAN it says Transynd is a Manual Transmission so if i was Unclear my Allison 1000 is Automatic.... still i do see the 295 Recomendation on allisons website and at advanced i discovered ROYAL PURPLE is TES 295 Approved as well as 389. So i think the tranny takes about 20 quarts in the 2500HD royal purple would be 260$$ the transynd is like $100 for 5 gallons i think? how much would it be for a top grade Synthetic DEX III/VI??? and what Brand should i go with For tranny fluid cause i like mobil one everything else

 

Every Allison 1000 is automatic. TranSynd is a synthetic AUTOMATIC transmission fluid..period.

 

Your owners manual says Dexron III because that is what GM used back in 2001 when you truck was built. Dexron VI was not even made yet. To answer your question NO that does not mean Dexron VI is automatically the choice you should go with. It doesn't matter that is says it is backwards compatable, each appplication is a little dfferent, I would not trust my vehicle to a generic label on a bottle that says go ahead and use it.

 

You NEED to call up Allison Transmission and speak to a tech advisor as to what they recommend you should run. I'll bet they will say TranSynd, it is a factroy approved fluid and meets the toughest specifications.

 

Call Their Tech Assist Line -> 1-800-252-5283

[markw8]

I just thought id go to Advanced auto and Both Them and My owners Manual say DEX III which Of course means DEX VI should be okay? in the Owners MAN it says Transynd is a Manual Transmission so if i was Unclear my Allison 1000 is Automatic.... still i do see the 295 Recomendation on allisons website and at advanced i discovered ROYAL PURPLE is TES 295 Approved as well as 389. So i think the tranny takes about 20 quarts in the 2500HD royal purple would be 260$$ the transynd is like $100 for 5 gallons i think? how much would it be for a top grade Synthetic DEX III/VI??? and what Brand should i go with For tranny fluid cause i like mobil one everything else

 

I'm not sure you can find Mobil 1 in a true Dex VI. They seem to only have multi vehical fomulas. I intend to use Valvoline Dex VI which is synthetic, when I change mine. I think Autozone has it.

 

One other thing, If you only change filter and drain the pan you should need less than 10 quarts.

 

Mark

[dewfpo]

A pan drain with the 'standard depth' pan is 7.4 qts. Replacing the spin on takes about 21 oz. of ATFto replace so you're right at 2 gallons if your pull the plug and change the spin on.

 

DEWFPO

[kurt1993]

I just thought id go to Advanced auto and Both Them and My owners Manual say DEX III which Of course means DEX VI should be okay? in the Owners MAN it says Transynd is a Manual Transmission so if i was Unclear my Allison 1000 is Automatic.... still i do see the 295 Recomendation on allisons website and at advanced i discovered ROYAL PURPLE is TES 295 Approved as well as 389. So i think the tranny takes about 20 quarts in the 2500HD royal purple would be 260$$ the transynd is like $100 for 5 gallons i think? how much would it be for a top grade Synthetic DEX III/VI??? and what Brand should i go with For tranny fluid cause i like mobil one everything else

 

I'm not sure you can find Mobil 1 in a true Dex VI. They seem to only have multi vehical fomulas. I intend to use Valvoline Dex VI which is synthetic, when I change mine. I think Autozone has it.

 

One other thing, If you only change filter and drain the pan you should need less than 10 quarts.

 

Mark

 

 

thank you, i guess im going with either a Dex VI or the Transynd that Allison/GM reccomends they say its really good stuff i guess?