Former Allison Transmission Fluids Engineer

[greezykid]

After changing to transynd temperature gauge running very cool,is this normal? thanks

[DriVer]

Quote:

Originally Posted by greezykid After changing to Transynd temperature gauge running very cool,is this normal? thanks

Cooler running transmissions is what ultimately everyone will seek to accomplish when replacing conventional ATF for Transynd.

[greezykid]

I know cool is good but at times I barely get a reading on gauge,thought gauge was broke.

[Freebird23]

Is there a time limit on fluid.Changed 2 years ago,trans got hot once because of dirt on rad. Engine did not even get hot ,but tranny lite came on.No problem after cleaning.Just thinking about time life.
Thanks----Bill

[hzjcm8]

Quote:

Originally Posted by greezykid After changing to transynd temperature gauge running very cool,is this normal? thanks

Greezykid,

Yep. It's normal. The older ATF was likely thinned out so it's not pumped as efficiently through the cooling system. That's where you pick up most of your cooling increase.

[hzjcm8]

Quote:

Originally Posted by Freebird23 Is there a time limit on fluid.Changed 2 years ago,trans got hot once because of dirt on rad. Engine did not even get hot ,but tranny lite came on.No problem after cleaning.Just thinking about time life. Thanks----Bill

Bill,

Allison provides mileage limits on transmission fluid but there's really no "calendar time" limit as far as I'm concerned. The best way to determine fluid life is to use fluid analysis. Check the transmission fluid once per year with an "Advanced Oil Analysis Kit". Only the analysis can tell you if your overheating incident did any real damage. My guess is that you're OK but you really should check it.

I'd get a kit and check the fluid; then, you'll have peace of mind knowing exactly what's going on with the fluid and transmission. If it needs changing the analysis will tell you. And, if it's OK, and you can run longer, the analysis will tell you that too.

PS: I've got my preference; but, someone on this forum can tell you what oil analysis company to use.

[ImagineIF]

Quote:

Originally Posted by hzjcm8 Bill, Allison provides mileage limits on transmission fluid but there's really no "calendar time" limit as far as I'm concerned. The best way to determine fluid life is to use fluid analysis. Check the transmission fluid once per year with an "Advanced Oil Analysis Kit". Only the analysis can tell you if your overheating incident did any real damage. My guess is that you're OK but you really should check it. I'd get a kit and check the fluid; then, you'll have peace of mind knowing exactly what's going on with the fluid and transmission. If it needs changing the analysis will tell you. And, if it's OK, and you can run longer, the analysis will tell you that too. PS: I've got my preference; but, someone on this forum can tell you what oil analysis company to use.

I was wondering if it would be worth the price to move the trans cooler from being sandwiched with the radiator and CAC. My thought was to mount a cooler with thermostatically controlled fans to the area above the tag axle.

Would it work? Will the temperature reduction be worth it?

Gil
08 Beaver Contessa 42

[hzjcm8]

Quote:

Originally Posted by ImagineIF I was wondering if it would be worth the price to move the trans cooler from being sandwiched with the radiator and CAC. My thought was to mount a cooler with thermostatically controlled fans to the area above the tag axle. Would it work? Will the temperature reduction be worth it? Gil 08 Beaver Contessa 42

Gil,

It's a story problem (remember how we all hated those in grade school).

Given the temperature drop (oil temp - ambient temp) and internal flow rate through the cooling circuit (which is a function of pressure and total resistance) remain the same, the only thing that might improve the cooling effort would be frontal area and air flow rate across the cooler. So, given the new location, you'd have to compare to see which configuration increases cooling effort. The thermostatically controlled cooling fans should help as this should increase air flow. Some large military vehicles (ie: Abrams M1 Main Battle Tank) are set up with auxiliary cooling fans.

[lonestarace]

I would first try to relocate your current cooler from in between the CAC and radiator to in front of them. If that doesn't work, then try installing a larger cooler, again in front of the other two.

[boomvan]

Hi Tom,

Off topic from Allison transmissions...
If you owned a Ford C6 or E40D, would you use transynd in it?
I run transynd in my Chevy 4L60 and 4L80 with good results. So Im thinking about how the Ford transmissions will do?

My Ford vehicles:
C6 trans in 1986 Ford E350 chassis Jayco 26' motorhome
C6 trans in 1989 Ford E350 diesel cutaway box van
E40D trans in 1992 Ford E350 cutaway box van
E40D trans in 1992 Ford F350 diesel pickup

Plus Im very curious overall about TES295 fluids because I work for an Allison Distributor & service center and wonder about uses in other applications besides Allison.

Thanks!

[GWinger]

This has always been a confusing issue for me...

I have an '07 GMC 3500HD dually. So which transmission is in it? (1000/3000?)
Is DEC VI and Transynd the same thing?
GWinger

[alvinc]

Just a question of form!

Shouldn't all these different questions be different threads in the Allison Transmission Forum? It probably OK now, but think how difficult it will be to find the good answers when this thread is several hundred pages.

If the reply is not related to thanking Mr. TranSynd for his joining, then it should be a different thread. This thread has been hijacked so many times I have lost count.

Off the soapbox, and thanks hzjcm8 for sharing your knowledge.

[edgray]

Quote:

Originally Posted by GWinger This has always been a confusing issue for me... I have an '07 GMC 3500HD dually. So which transmission is in it? (1000/3000?) Is DEC VI and Transynd the same thing? GWinger

I think unless your truck has a Duramax diesel motor it does not have any Allison tranny at all. If it is a diesel, I'm pretty sure you have an Allison 1000.

Dexron VI is definitely NOT the same as TranSynd

[hzjcm8]

Quote:

Originally Posted by boomvan Hi Tom, Off topic from Allison transmissions... If you owned a Ford C6 or E40D, would you use transynd in it? I run transynd in my Chevy 4L60 and 4L80 with good results. So Im thinking about how the Ford transmissions will do? My Ford vehicles: C6 trans in 1986 Ford E350 chassis Jayco 26' motorhome C6 trans in 1989 Ford E350 diesel cutaway box van E40D trans in 1992 Ford E350 cutaway box van E40D trans in 1992 Ford F350 diesel pickup Plus Im very curious overall about TES295 fluids because I work for an Allison Distributor & service center and wonder about uses in other applications besides Allison. Thanks!

It's okay to use it in those model years.