The largest Brazilian oil company Petrobras, which supplies fuel and motor oils to McLaren, will officially announce the termination of cooperation with the team in few coming days. 

The Brazilian government owns 64% of Petrobras shares. In 2018 the company announced a long-term partnership with McLaren. However, the Brazilian President Jair Bolsonaro claimed in May this year, that he wanted to withdraw the five-year agreement. Since then Petrobras and McLaren have negotiated on breaking the agreement. According to Motorsport, the termination of the contract will be officially announced soon.

"Petrobras has been terminated unnecessarily expensive £163 million sponsorship contract with McLaren," - the document released by Brazil's economy Ministry said.

McLaren refused to comment on the situation, recalling only, that this kind cases are a commercial secret. 

At the moment the official suppliers of motor oils and lubricants in Formula 1 are: Shell (Ferrari, Alfa Romeo), Petronas (Mercedes), ExxonMobil (Red Bull), Castrol (Renault), Orlen (Williams), Ptt lubricants (Toro Rosso).