Any Preve Turbo owners who experience slight metal grinding sound when accelerating up a slightly inclined slope or from a toll plaza at speeds of say 20km/h to 100km/h. The sound is not really loud so if you don't pay attention you will not hear it. I"m not referring to the sound of the Turbo engine.

I don't know if this is a defect or unrefinement of the Turbo engine. Since it is a minor issue, I will only bring up this issue in the next service. Just curious if any other Preve owners experience this metal grinding sound when accelerating from standstill to about 80-100km/h.

If anyone drives a manual car before, the "metal grinding" sound is like the sound you hear when you accelerate the vehicle using 4th gear when the right gear to use is 2nd or 3rd gear.

Anybody compared different types of petrol on the Preve Turbo? Any difference in smoother acceleration or power between Petronas, Shell, Caltex or BHP?

THanks for the information. Certainly useful. Yes, you are correct metal grinding sound may not be so accurate. The sound is metal/engine knocking or loose screws knocking against each other kind of sound.

May I ask how old is your Preve Turbo? Yes, it I get this sound in mid-speed acceleration anywhere from 10km/h to 100km/h. It happens around 20km/h to 90km/h at low rpms below 2000.

I have been using Petronas petrol all this while and just changed to Caltex yesterday. Looks like the sound is even louder now but will keep monitoring. Will try BHP next.

Forgot to ask. Have you brought up this matter to the guys at the service centre, particularly the large one along Kesas highway Centre of Service Excellence? I did not ask the SA (doubt he could help) but will ask the guys at the service centre to check it for me when I send the car for the next 10,000km service. I wouldn't want to waste my time going there now as this issue is a minor one. Having said that, I would be slightly disappointed if it is something that is inherent in the vehicle and cannot be rectified.

Okay thanks for the information. I am still monitoring the performance of the vehicle with Caltex since i just pumped in the first tank with about 5% Petronas leftover. Will pump in another full tank of Caltex by end of this week and monitor the performance.

The acceleration seems a bit smoother with Caltex than Petronas though I am more interested in the slight knocking sound in the Turbo engine, whether it can be eliminated completely with the right fuel. I will try BHP after this to see which fuel will be more "friendly" to the Turbo engine.

Thanks.

I can feel the airbag behind the seat, and there is a slight sound when I move my back sometimes. It is as if there is some air pocket in the seats where the airbag is located. Anybody experience the same?

Audio is switched off. Preve Turbo.

Ok thanks. May I ask how did they "fix" it? Did they open up the seats or something?

By the way, anybody uses Petronas fuel on the Preve Turbo here? I have been using Petronas on the Preve Turbo and now on my 1st tank of Caltex fuel, and apparently there is some perceived difference in performance between the two. I will need to pump a 2nd tank of Caltex to reconfirm if the Petronas fuel I am using all this while is the culprit to some of the issues I am experiencing previously.

This post has been edited by SportyHandling: Oct 9 2013, 09:43 PM

Thanks for the feedback. That is a pertinent point on selecting the petrol station based on daily route for convenience.

Is your Preve the low spec model or the high-spec Turbo version? If it's latter, do you experience any knocking sound in the engine with low speed acceleration at low rpms with Petronas fuel?

I appreciate your feedback. With this information now including myself we have 3 Preve Turbos with this knocking sound.

Previously I used Petronas Primax fuel and the knocking sound is quite apparent when accelerating at low to moderate speeds. Just recently I changed to Caltex and the knocking sound has reduced quite a bit. Not entirely diminished, as I can still hear some knocking but certainly not as loud as before with Petronas Primax.

Hopefully with this 2nd refill of Caltex fuel this weekend, the knocking sound will reduce even further or perhaps diminish completely. Wishful thinking. Surprisingly the Turbo engine is quite sensitive to the type of fuel that is used.

Since you are getting the knocking sound with Shell, guess that is out. I will try Caltex for 3-4 times before deciding whether to swap to BHP. If the knocking sound is completely gone with Caltex, it appears that I will have to stick with it for good.

Not sure, though one thing is for sure is that I'll highlight this issue to Proton once my car is due for the 10,000km service. Will ask them to rectify it as well, if it is possible.

The knocking started after the 1st service at mileage 1,000km. Now my vehicle is approaching 5,000km and the knocking is still there albeit much reduced now. Don't know if it's due to the type of petrol (Caltex) or something else.

It is good that your vehicle does not exhibit knocking.

If you have driven a vehicle with manual transmission before, the knocking is sound is similar to what you'll be getting if you use 4th gear to accelerate the car when you are supposed to use 2nd gear.

I guess Proton service centres only use Petronas engine oil? Anyway the vehicle was on Petronas Syntium 800 during the 1,000km service and Petronas Primax RON95 all the while just until recently I switched to the 1st tank of Caltex.

I wonder why you were given Petronas Synthium 3000 whilst I was given Synthium 800 during the 1,000km service.

To Preve Turbo owners, may I ask what engine oil was given to you on the first 1,000km service?

Thanks.

This post has been edited by SportyHandling: Oct 12 2013, 09:24 PM

Thanks for the information. Much appreciated.

The Service Advisor that attended to me didn't advise on the engine oil options available, and I guess Synthium 800 was provided as default.

I noticed Synthium 800 is not full synthetic on the website. Is it supposed to last 10,000km?

Any Preve Turbo owners here who were given or had chosen the Synthium 800 during the 1st 1,000km service?

Yes, the knocking sound is quite similar to shaking a spray can with a metal ball inside. It's like accelerating a vehicle with manual transmission in the wrong gear, say the 4th gear, when the right gear to use is 2nd gear or 3rd gear.

Early in the morning today finally managed to hit 180km/h on the PReve Turbo just for a short while before a vehicle in front foiled the attempt to go any faster. THe pickup from 120km/h to 180km/h seems to be quite effortless with the Turbo engine. It doesn't take long for the vehicle to climb up to 180km/h.

Anybody managed to hit 200km/h?

Stability is good due to the firm suspension. The Preve Turbo's suspension is something that needs to be mentioned. It is firm and solid, and the sound of the suspension is a soft thud when going over imperfections on the road. In my mind, the suspension of the Preve Turbo is of higher quality compared to some Japanese models in the RM120k+/- price bracket which feels soft and floaty in comparison.

In high speed cruising, there is certainly no issue with stability mainly due to the weight of the vehicle and firm suspension. Rock solid stability. It's only the noise of the Turbo engine, but even that I feel the loudness of the engine at 180km/h is still not too bad. Doesn't sound like the engine is approaching its limits yet.

Get the Turbo version. It is certainly worth it. The extra power on tap makes up for an exhilirating drive. Not that you want to drive fast and furious everytime but if you wanted a more powerful acceleration in everyday drive, you will regret it if you don't get the Turbo.

Only caveat, the manual shifting option, paddle shifters and S mode are a bit meh. The normal D is good for all driving conditions.