powerglide fluid.

[Johnc]

What brand should I use?

["MrEd"]

3 choices.
1. TypeF (cheap)
2. HyGuard (John Deer)
3. Transynd (Allison)
All 3 would be good candidates. TypeF has been my choice for years cause I'm poor.

[Blue88Coupe]

What brand should I use?

When I had mine built I asked the same thing and the builder told me it didnt matter very much as long as I changed it frequently

[bigminz]

application?

[turbostang]

John- In your car, I'd be starting with a good brand of hydraulic fluid. For starters, it's slightly thicker than ATF and is a bit more durable as far as heat it concerned.

If the converter feels a bit tight, change to ATF and try it - it will 'loosen up' a bit.

If it's too loose and you're already running hydraulic fluid, you'll likely have to restall it.

Make sure you get the fluid that's usable as 'lubrication' and not strictly hydraulic. I can't ever remember the number that's on the jug, I always have to read it - but it's easy to find, as I beleive it's more expensive than it's hydraulic only counterpart.

FWIW, Castrol makes some blue hydraulic fluid that's supposed to be pretty good and has a heat index way higher than standard hydraulic fluid - I've just never got to try it. It's on Oreilly's web site if you search castrol blue hydrualic fluid.

[Woods Racing Transmission]

What brand should I use?

What are specs on the car/engine/trans and primary use of said car?

[dville_gt]

If the converter feels a bit tight, change to ATF and try it - it will 'loosen up' a bit.

this x1000

[Johnc]

What are specs on the car/engine/trans and primary use of said car?

its a twin turbo mod motor car with a big stall powerglide that is driven on the street regularly but will be mostly raced at the track with transbrake. Car weighs 3700 lbs.


I'm about to put on a trans temp gauge so that's why I'm changing the fluid again. I'll look into that castrol blue hydraulic fluid. thanks for the help!!

[Johnc]

John- In your car, I'd be starting with a good brand of hydraulic fluid. For starters, it's slightly thicker than ATF and is a bit more durable as far as heat it concerned.

If the converter feels a bit tight, change to ATF and try it - it will 'loosen up' a bit.

If it's too loose and you're already running hydraulic fluid, you'll likely have to restall it.

Make sure you get the fluid that's usable as 'lubrication' and not strictly hydraulic. I can't ever remember the number that's on the jug, I always have to read it - but it's easy to find, as I beleive it's more expensive than it's hydraulic only counterpart.

FWIW, Castrol makes some blue hydraulic fluid that's supposed to be pretty good and has a heat index way higher than standard hydraulic fluid - I've just never got to try it. It's on Oreilly's web site if you search castrol blue hydrualic fluid.

I think I need to add another cooler with a fan as well. I've been driving the car around in sub 50 degree weather so hopefully I haven't overheated the fluid on the street.

[Woods Racing Transmission]

its a twin turbo mod motor car with a big stall powerglide that is driven on the street regularly but will be mostly raced at the track with transbrake. Car weighs 3700 lbs.


I'm about to put on a trans temp gauge so that's why I'm changing the fluid again. I'll look into that castrol blue hydraulic fluid. thanks for the help!!

Sounds like a mean street ride for sure.

I don't have any info on the Castrol Blue. I would recommend John Deer Low Viscosity Hygard with 1 or 2 quarts of regular Dex III. You can tailor your stall by changing the percentage of Hydro fluid you use.

That said there are several turbo cars running the Transynd (Allison fluid made by Castrol) with very good results. Some use it 100% most like to mix it with the JD Low Visc. The Transynd fluid is very good at controlling Heat, Wear, and has a low oxidation rate. It will also give you longer service intervals. There is a reason its $40.00/gal.

What is in it now? How does it look?

[STROKD]

John, call Keith Neal... he has a bad ass fluid that is made for exactly what you are using... Andrew Weil has it in his 1500 hp Firebird street car with absolutely no transmission problems.

[bigminz]

John, call Keith Neal... he has a bad ass fluid that is made for exactly what you are using... Andrew Weil has it in his 1500 hp Firebird street car with absolutely no transmission problems.

He normally recommends AMSOIL compressor oil. A couple of different viscosities available. Both viscosities of hyguard work well too. Most street cars no matter horsepower can get away with a good synthetic since they can get good airflow across the cooler.

[turbostang]

Sounds like a mean street ride for sure.

I don't have any info on the Castrol Blue. I would recommend John Deer Low Viscosity Hygard with 1 or 2 quarts of regular Dex III. You can tailor your stall by changing the percentage of Hydro fluid you use.

That said there are several turbo cars running the Transynd (Allison fluid made by Castrol) with very good results. Some use it 100% most like to mix it with the JD Low Visc. The Transynd fluid is very good at controlling Heat, Wear, and has a low oxidation rate. It will also give you longer service intervals. There is a reason its $40.00/gal.

What is in it now? How does it look?

This brings up a good point - I mix mine with 2-3 quarts of regular ATF. If you don't, you can't see the hydraulic on the dipstick.

FWIW, I run two air coolers with a fan - all in the back of the car, it regularly sees 160* after a pass. If I run within an hour or so, it will see 180*. This is stalling to 5200 on the line, shifting at 7800.

If your converter is too loose, no amount of coolers, or different fluids will keep it from burning fluid every 5-6 passes. The hydrualic fluid starts to smell like burned eggs, very easy to tell.

I heard about the Castrol blue from a pool guy - he used it in his bobcat (?). It kept overheating the regular hydraulic fluid in the summer. He swears he just switched fluids and never had another problem. After I heard that, I did some digging and found some info on drag race use on YB. Also read it has a much higher heat index rating - something like 108. Which, from what I recall, was several points higher than ATF and most competing hydraulic fluids. I just never got to try it out before I took the car apart for the winter....