If I had a DI engine I would try to use Top Tier gas, more detergents. I would also put in a bottle of Techron once a year or so. I would not pay for a dealer EFI cleaning unless I had problems.
If I had a DI engine I would try to use Top Tier gas, more detergents. I would also put in a bottle of Techron once a year or so. I would not pay for a dealer EFI cleaning unless I had problems.