On a standard engine it's probably over-kill, but then as an engineer I would always prefer over-engineering to failure.
Traction fluid is roughly £100 a bottle, with the filter costing £20. Needs changing every 50,000miles or 2 years.
________________________________________
"Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6
2000 (X), Moonstone