Guys. I got a problem with my Forte.

Last 2 days my sister sent my Forte (because I'm busy with things, so I drove my sister's car) to Puchong's SC to have the 25k service. And on the evening, I took my Forte for a spin to check whether its a smooth driving.

To my surprise, my car jerks (minimum jerk, I dunno what caused it) for quite sometime. I thot it was my engine idle timing, but thats not the case because the RPM didnt drop when it jerks.

I give the car about 2 days (drive and pray la) to rectify the problem by itself, but nope. It still there.

I checked my car's service report, and to my surprise (again) for the past 3 services, the SC uses 3 different lubricant (Synthium 800 (cost around RM98), 3000(RM100++) and another unknown name for the first service, cost RM200+).

My questions:

1) Anyone experience this before?
2) Is it okay to use different viscosity of oil in each services? Any facts?
3) Should I bombard that SC for messing my car? This is the second time they mess with my car. (Last time it was the engine oil plug. The SC didnt tightened it, so my porch was flooded with lubricant. Went there, they replaced it, say sorry, and a set of porcelain by Petronas (u buy engine oil at Petronas, u get that free item.)

I really pissed off right now.

Guys. I got a problem with my Forte.

Last 2 days my sister sent my Forte (because I'm busy with things, so I drove my sister's car) to Puchong's SC to have the 25k service. And on the evening, I took my Forte for a spin to check whether its a smooth driving.

To my surprise, my car jerks (minimum jerk, I dunno what caused it) for quite sometime. I thot it was my engine idle timing, but thats not the case because the RPM didnt drop when it jerks.

I give the car about 2 days (drive and pray la) to rectify the problem by itself, but nope. It still there.

I checked my car's service report, and to my surprise (again) for the past 3 services, the SC uses 3 different lubricant (Synthium 800 (cost around RM98), 3000(RM100++) and another unknown name for the first service, cost RM200+).

My questions:

1) Anyone experience this before?
2) Is it okay to use different viscosity of oil in each services? Any facts?
3) Should I bombard that SC for messing my car? This is the second time they mess with my car. (Last time it was the engine oil plug. The SC didnt tightened it, so my porch was flooded with lubricant. Went there, they replaced it, say sorry, and a set of porcelain by Petronas (u buy engine oil at Petronas, u get that free item.)

I really pissed off right now.

i kena b4...even now still have.
but mine not while engine idling....is at speed around 39-42km/h.....

when i asked korean technician, he said might due to our petrol problem....
coz, our petrol might hv mix abit with water....so, u knw lah...malaysian petrol quality...

i might have 2 say, hopefully GDI engine won't arrive untill malaysia solve the petrol quality problem 1st...

eh guys...i dunno from my driver seat or passenger seat, got squeaky sound leh....wat 2 do?

i kena b4...even now still have.
but mine not while engine idling....is at speed around 39-42km/h.....

when i asked korean technician, he said might due to our petrol problem....
coz, our petrol might hv mix abit with water....so, u knw lah...malaysian petrol quality...

i might have 2 say, hopefully GDI engine won't arrive untill malaysia solve the petrol quality problem 1st...

eh guys...i dunno from my driver seat or passenger seat, got squeaky sound leh....wat 2 do?

that is due to our malaysian petrol quality...mix with abit of water oso can happen like dat...