Indonesian oil firm Pertamina have decided to end their sponsorship of Manor.
The decision comes after the Rio Haryanto was demoted to reserve driver after his funding ran out.
"The Manor Racing team has offered to let us continue advertising on its cars. However, we have decided to discontinue the advertising," Pertamina spokeswoman Wianda Pusponegoro told The Jakarta Post.
Haryanto will be replaced by Esteban Ocon from this month's Belgian Grand Prix
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