At last! This is a MASSIVE STEP in the right direction by the FIA! Engine parity!
"The FIA recently sent a technical directive to all F1 teams reinforcing the existing requirement for engine suppliers to give identical hardware to their customers by insisting that henceforth all cars also have the same software and operating conditions.
Customer teams now also have to receive identical fuel and oil specifications to works cars, unless they have opted for a different supplier." Adam Cooper F1 Reader.
http://www.f1reader.com/news/mercede...ampdown-190775
This is by far the most significant development in F1 in years imo, well done the FIA!