@desiguy, EuroStar is new name of General tires, so be careful. by installing 195/65/15, your tires will touch the body when fully loaded.
I was given surety that Imperium are good tires, just like dunlop.
@Murtaza, yes, that's good average, seems like changing pump and reducing speed did the job so the average is about 17Km/Litre
@adnan, 3Litres engine oil is enough, rest of things you have mentioned are quite normal, the gurrr sound is the ABS brakes...