Yes
dexron 3 replaces dexron 2, so you could mix them but the dexron 3 is better
5w-40 fully synthetic
Try an auto parts store. Dextron II may be replaced with Dextron III.
10w-40 fully synthetic or 0w-40 fully synthetic are most popular
avoid fully synthetic oil use semi
You'll need to flush out the transmission cooler as there's a technical service bulletin on this and install Dextron 6 along with a new filter. This is a synthetic fluid that's compatible with your car and solves the problems with Dextron 3.
We have Camry 99 with automatic transmission and it requires transmission liquid Dextron 2 or Dextron 3.
Yes, Dexron 3 is just the newest version of Dexron 2 and they are interchangable in most cases, but not all...for example old Supra's need Dextron 2 or the autobox makes a buzzing sound at idle, so check first.
All major brands of full synthetic are good.
dextron 2
Dextron 2 8.1Liters - Automatic