Good Day fellow car enthusiast! Patulong naman po may na-encouter kasi ako first time na problem sa sasakyan ko (Ford Focus 2007 1.8 Hatchback odo:40K). 2 days ago I was driving at SLEX speed 100-120kph, normal naman yung takbo. Then i shifted to 130kph, may naramdaman ako na kakaiba kasi umuugtol/bumubudyok. then i reduced speed to 100kph, normal naman hindi bumubudyok/umuugtol. Then I increase again to 130KPH to test kung talagang babalik, yun na naman.. From 130kph-150 kph umuugtol/bumubudyok sya... ano po kaya ang possible na problema? dati naman po ay wala akong nararamdaman na ganon. my car is newly changed oil with new battery. I hope po matulungan nyo ako kung ano ang maaring problema and possible solution.

I am not sure if i posted my topic on the right thread.

Thanks in advance!!!!