Transmission fluid type?

[Terrance P. Perryman]

I have a transmission that was built by Eric Shritz @ Dynotech a while back. I have the 10.5 Pro Torque converter also. I can't remember what fluid type and filter that he told me to use. Is anybody running this set up and if so what are you using. Thanks...

 

[87geeinn]

Dex III: Works okay but needs to be changed often
Dex VI: Much better formula than Dex III in regards to resistance to heat and shear properties; lasts much longer than Dex III; firmer shift
Type F: Firmer shift than both Dex III and Dex VI but needs to be changed just as often as Dex III

IMO, can't go wrong with Dex VI.

 

[Terrance P. Perryman]

Thanks for the response... When I lasted talked to Eric he said not to use Type F and I do not think that Dextron V1 was out back then so I am pretty sure that ir was Dextron 111.

 

[Nick Micale]

We have used DexVI since it came out a few years ago and overall it is much better than any fluid we have used.

Our shifts are just as firm with Dex VI as that is done when selecting and installing the right parts for the intended application.

Do not waste your $$$ on Type F as it is VERY short-lived in a performance application. One trip to the track in a race car and it is done.

Just be sure you get the "real" Dex VI, not the blend that is being used in some foreign and domestic applications.

 

[ZNix]

I like my mobil 1 trans fluid. Works great.

Posted from the TurboBuick.Com mobile app

 

[jpwalt1987]

I run John deere Hy-Guard.


Posted from the TurboBuick.Com mobile app

 

[Terrance P. Perryman]

Thanks for the reply Nick...Tell me should I remove my torque converter and drain it or just change out the filter and top off with Dextron v1? Also which filter do you suggest? Thanks...

 

[Nick Micale]

When we service a trans with a new filter, we add Dex VI to the exsisting fluid as it is compatible with Dex III, but I would not mix it with any other fluids.

Dex VI is a vastly improved fluid developed for GM which can now give 100K mile warranties on their transmissions!

 

[Phoneguy]

I was told to run Dex VI in mine...... Vince Janis said to run Type F and quit using Dex VI.....
Who is correct????

Bryan

 

[KEVINS]

10-15 years ago the hot thing was a certain type of tractor hydraulic fluid. Is this still adequate or not?

ks

 

[larrym]

I use Dex VI no problems here.

 

[turbo nasty]

Using B&M trick shift this time around by recommendation of my builder.
Im and he is not so sure that the patent on DEX IV is still valid...ether way with the flood of DEX IV "Compatible" fluids out there on the market now that skew from the original mix so I dont trust them for the possibility of less than good clutch grip.
Trick shift is better than regular ole Type f and will handle temps better and promote clutch performance to more firm application and that's what I want. Why..... because ...racecar

 

[salvageV6]

Walmart Dex III in both my Schertz built trannies and one has the 10" Pro Torque converter 3.2K stall.

Over 50K miles on each of them.

Changed fluid once, PTC shallow pans cleaned the screens at the change.

That's one performance part, a rather complicated one at that, that works great, make that flawless, on the street daily driving, so far....

RIP Eric.

 

[Nick Micale]

My choice is based upon the extreme condition of the race track with a trans brake where the trans oil temp with reach numbers that will never be seen on the street, but here will still see extreme operating temps.

The last time a few years ago I used Type F in a race car with a fresh trans it was black and burned with one trip to the track. Dumped the burned fluid and replaced it with Dex VI and it was good for the rest of the season.

I do many GN's with only street use, but I still want them to have the extra protection of the better fluid.

Most areas of the country do not have the continuous summer temps we do as heat is the enemy of transmissions.

This afternoon we are "enjoying" 107 degrees so far today, and should see 110 before the sun recedes!

 

[robzombie]

I will share my experience with DEX VI. which is recommended by the builder of my trans.

While I will agree that it may hold up better in high heat applications there is a draw back if you reach trans temps over 200* that may or may not be associated with other types of fluid.

When I went to pick up my car with a fresh trans and torque converter installed I took it for a shake down run and flogged it pretty good.

With the builder in the car on this trip we noticed that after a few hard runs it would start to shift higher and higher as the heat built up/ all runs were with the ac on.

We went back to the shop and installed a trans temp gauge in the dipstick tube and took it for another ride. When we reached 195* it would shift out 100rpm later, and 200/205* it was 200rpm higher etc. .

This was with a GBP rad and dual fan setup that I was told would keep coolant temps below 180* and therefore trans temps should have been within 10/15* of coolant temps.

Well needless to say the fluid changed color [got darker] but didn't smell burnt.

I have since put the stock radiator back in [same dual fan setup] and plumbed an external trans cooler [stacked plate] with a 10" fan that comes on with the cooling fans and have never gone above 190* coolant temps with ac on sitting in traffic/stop and go traffic, and it stays under 170* at all times with ac off.

I now have consistent shifts every time and the fluid looks and smells new.

 

[turbo nasty]

IMO transbrake cars should use tractor fluid

 

[Crazyx4]

what is the brand or viscosity. we use something in fluid couplings that drive conveyor belts. th1000 and mobil 424. is that what you are talking about?