Bardahl Full Metal SpecificationsBardahl Full Metal is an anti-wear additive for engine oil. Its action restores the seal between the piston and the cylinder wall increases and rebalances compression limits oil consumption and prevents over-consumption of fuel. This treatment also improves flexibility and acceleration and increases engine efficiency and power. What's more Full Metal extends engine life and reduces wear by up to 40% on start-up. Compatible with all oils and engines it works immediately and remains active for up to 25 000 km.How to use: After draining the oil and changing the oil filter while the engine is warm pour the contents of the bottle into the engine oil.