Here is what I like in my cars:
I use Redline ATF in my T5s and T56 for years with no problems! I didn't notice any difference in warm weather but in the cold of winter it shifts 100% easier.
For the power steering use synthetic. It seems to reduce the sticking problems with the racks as they get older. Now I don't know this for a fact, it could just be from the fluid splashing or maybe even overfilled? But folks I know that road race think the 4th gens tend to heat/boil the oil enough to expand it to seep out the fill cap and the synthetic handles the heat better?
For engine: I also add a bottle of GM break in lube on the initial start up ( 20 minutes, change oil and again add GM additive, and drive 25-50 miles, then another oil change for 500 miles. I like to do the extra oil change just to ensure any of the other break in lubes or any shavings are removed from the oil and filter quickly. After that, I think that depends on how often and much you drive the car. I drive a limited amount and change oil every 6 months/1,000 niles so I feel synthetic would be a waste of my money.
I don't think there is any real difference in coolant, I use the eviroment friendly stuff. But I always add a bottle of redline weterwater as well.
JB
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93Z M6 Black: The 385 Lives! Supercharged, 3-core front mount intercooler, GTP heads, 3:73's, Street twin clutch, Jethot Longtubes, Mufflex 4" catback/spintech, S+W cage, Spohn Suspenion, Yada Yada Yada
1) Build it
2) Race it
3) Break it
4) Repeat!!!
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