Lubricants Business In Tanzania

I know the biggest knowledge bank of our times resides in this village. I’m thinking of the above business, can pull some heavyweights and sell the idea if it works. If anyone has info on the above, I would be interested to know;

  1. Who are the biggest(or list of) lubricants manufacturers (automotive, industrial, and other specialised) in Tz?
  2. For those in the business or understand it well, is it cheaper to buy and resell or buy the raw materials and manufacture own?
  3. Who are the biggest sellers or distributors in Tz?
  4. Numbers of vehicles or statistics of automobiles in Tz?
  5. Anything else you feel its important to know?
  6. Any statistics, reports, data repository etc that has this kind of data?

Please help a brother here