If the Wolf's Head stuff is full synthetic and intended for an autobox with the continuously-slipping torque converter clutch, it will be ok as the man said. It will have the right additives for such an autobox. Remember it's important to get all the old fluid out. DO tell us what you find with it won't you, as this is a very popular subject.
Leedsman.

Left this hanging last week. Just confirming the Rock AUto pan is plastic, filter is integrated. Here's a pic

I was finally ableto get the Jag into the transmission shop yesterday for a new pan sleeve and fluid replacement. Now that is is colder outside the squeek during upshifts is gone but I decided to go ahead with it anyway. The fluid was surprisingly clean and gold and only a small amount of slugde on the magnets but there is only 35K miles on the clock. The skid plate near the sleeve was wet and when the pan the dropped and the white plastic thingy moved out of the way the sleeve practically fell right out. The new one needed a fluid lube and pressure to get it in the nest so this operation needed to be done anyway. The trans professional proceeded to fill and drain the trans three times while starting the car and shifting thru all the gear positions in between the drains and refills. Took almost 18 quarts of Wolf's Head synthetic ATF to do the job.
I only have about 10 miles since fluid replacement and I can't say that I notice anything different either good or bad, not really enough miles yet to tell. I will keep you posted was the car is driven.

Thanks for the update. Hope all your ZF problems are now solved and the Wolf's Head ATF turns out to be great stuff. Keep us updated as you roll up some miles. As our S-Types age and approach high mileage, a number of us will probably start thinking about changing our ATF. And this subject will become more pressing for some of us as more of the poorly-designed factory ZF sleeves begin to leak....

I'm not surprised that your factory ZF Fluid fill was still clean and gold. ZF engineers and managers remain convinced that this stuff is indeed formulated for the long haul. The problems are with the ZF components that are supposed to hold the fluid intact, not the fluid itself....

Thanks,
As Jon says keep us updated.
Did your tranny guy go through the temp check process to get the final level?

I think so. I printed out the TSB for him. He's has been a transmission expert for 30 years doing all the work himself in his one man shop. He has a great reputation and is very meticulious, which is why I had to wait over a week to get an appointment. He has serviced many ZF transmissions before,says they are full of electronics and solenoids. I'm quite sure he did the work properly and checked the temperature but I did not ask him specifically about that, I was more concerned about the condition of the old fluid, sludge, and replacement sleeve. I will ask him about the fluid top off at temperature next time I see him. I had the S out last night and drove it about 30 miles. After warming it up, I drove aggressively shifting manually and was extremely impressed with the performance, upshifts and downshifts are precise and smooth. I was a little concerned with a slight studder at about 1250 rpm at 35-40 MPH at low load. It seemed as thought the trans did not know what gear to use, and the RPM would go up and down 50 revs or so without throttle input, it was like this on occasion before the fluid replacement too. After it warmed up and with 20 or so miles on the clock this symptom disappeared. I'll have to try it again when it's cold and see if its gone for good.

Could be TSB S307-14 "Surge During Warm up at 40mph to 60mph", which I think is in the TSB section as tramsmission_surge.ZIP (note the wrong spelling)

Thanks for the info, the symptoms of this TSB sound a little more serious than what I am experiencing, I may becoming hypersensative to all of this now, I get at most a 50 rpm fluctuation up and down maybe 2X/ second at 40 MPH and 1250 RPM for a few seconds, I think it's between 5th and 6th gear. The TSB says its more like 150 RPM. I took this to the dealer when the car was still under warantee a few years ago and they tightened the motor mounts, (don't know if they were loose or not but i dont think so) I hope the fluid change will cure this,if not maybe I'll pay the dealer to hook up the gear and perform the software magic.

Oh well, it could just need the torque convertor replacing, then!

Maxthrottle, your plus/minus 50rpm. fluctuation is normal -- mine does it. And among all the stuff I read about this autobox, it is so described somewhere. It appears, if my memory is correct, the logic controller (microprocessor) is doing it to the torque converter clutch for some reason. So worry not and enjoy your day.
Leedsman.

I'm glad to hear that this transmission quirk could be normal. Now that I have completely replaced the ATF I may be too sensative to any occurance that is less than perfect

800 miles on the clock since the Wolf's Head Synthetic AFT transfusion.
So far so good, all systems GO.
Keeping fingers crossed, knocking on wood, salt over shoulder...

Glad to hear it.

Same here. Good luck and keep us posted. Always good to have alternatives....