dexron 3 replaces dexron 2, so you could mix them but the dexron 3 is better
yes
If it is a A/T Powerglide, you can use Dexron or a synthetic such as Mobil 1 ATF. You may not be able to find Dexron, but you can use Dexron II or Dexron III.
No, you could mix with synthetic blend but its not recommended.
You can mix part synthetic oil with full synthetic oil.
Yes dextron 6 can be used in applications otherwise requiring dextron 3
yes
It's not red because it might old. Get dexron which is universal meaning it's compatible with other types of dextron (general, semi-synthetic, synthetic).
Dexron III/Mercon automotive transmission fluid (ATF) is generally recommended as a replacement fluid for automatic transmissions meeting original equipment manufacturers (O.E.M.) performance requirements for current General Motors, Ford, other domestic and imported passenger cars, vans and light trucks where DEXRON II, DEXRON II-E, DEXRON III, AND Ford/MERCON fluids are specified.Dexron VI is a partial synthetic which properties exceed dexron III by 100% in every area. Dexron VI can not be interchanged or repalced with DEXRON II, DEXRON II-E, DEXRON III, DEXRON-III/MERCON.
A 2002 yukon automatic transmission requires dexron III. GM now offers Dexron VI transmission fluid which is supposed to be better and also backwards compatible with older dexron fluids.
Yes, you can also mix it with conventional oil creating a blend.
Yes, you can. It is even sold as a Synthetic Blend.