1, 5w-40 or 10w-30 
check out the opie oils website - they give a discount for S.O.C. members 
  
http://www.opieoils.co.uk/product-finder/car/engine-oil/subaru/1997/forester/PETROL/product-finder-2.aspx 
  
2, I use the main box section that runs under the car for my trolley jacking point 
  
3, Ill pass on that one to someone who has owned that model B)