Nagpachange oil ako nung isang araw sa shell semi synthetic yung helix hx7 medyo kapos kasi sa budget sinabag na din ng mekaniko yung paglilinis ng airfilter binugahan nya ng hangin para maalis yung mga carbon deposits or whatever na tawag dun. So after matapos. Road test then we stop at puregold to have some groceries. Then pagstart ng engine at habang nag accelerate may whistling sound ako nadidinig medyo weird. Pinop up ko yung hood check the belt habang may nakaapak sa gas. Normal nman has anyone experience this advice naman po btw my ride jazz a/t 2006 ivtec. Tnx and more power tsikoters...