BP in advanced talks to sell $8bn Castrol unit to US investor Stonepeak.

BP is in advanced talks to sell its $8bn Castrol unit to US private equity group Stonepeak. The sale is part of BP's efforts to raise $20bn from asset sales. Castrol is a leading lubricants business with a global presence. The deal is expected to be a significant step towards BP's goal of raising funds to reduce its debt and invest in low-carbon energy.