I have driven 4 cars. 2 jap and 2 local. Until today no problem even i use ron95 all the times.

Lol, u guys are just paranoid. I went to california previously, do u know that ron they have are RON 91, 92 and 95 (AKI 87, 90 and 91) only at normal pump station. And the price for ron95 is about rm5+- per liter ( around usd 5++ per gallon). They used it (ron92 midgrade and ron95 premium) on big capacity engine such mustang, cadillac, Camaro for everyday used. No problem pon. Only Malaysian think ron 91,92,95 is bad for car, even we just used it for cheap jap car. Duhh

This post has been edited by calmshot: Jul 31 2012, 06:08 AM

use NGV lor. better.

I use 95 since begin intro. until now no problem. nvr heard ppl complain also

the foreman troll u

About 11.1:1 CR, no problem with RON95.

Consider high. What car is that?

My experience.. using mpv rondo 2.0 ... after the introduction of ron 95.. the performance is not that vroom anymore.. u have to feel it to believe it! in fact have to refuel often. ended up using my 1.5 wira to drive around. Personally there are some differences.

Will be purchasing elantra or tucson soon. Not sure want to use 95. ill keep my wira for that.

So many cars got burn nowadays.. and i do agree my wira is hotter than before...

First of all, it is not all about the static compression ratio. Compression ratio alone does not determine whether the engine pings or not. 4G63 compression ratio goes from 7.8 to 8.8:1 from the oldest to the newest and final batch of the 4G63 in the EVO 9. Subaru EJ20 maintained at 8.5:1.

It's all about the engine tuning. To squeeze more power out of the 2L engines, the Japs had to put very aggresive tuning and need to run it on RON100. They didn't make it run on RON100 just because they had RON100 fuel. Since the Japs don't give a damn about emissions control, they can tune it hard and run RON100 and spew shit out of the exhaust without anybody bothering them.

However, on export models and with strict emissions controls in US/UK, they had to use the EJ25 (2.5L) to produce the same power as 2.0L due to the less aggressive tuning and those engines are made to work with RON95 and below.

In Malaysia, the grey importers bring in JDMs and will ping when they use RON95. As much as the ECU wants to retard the settings, by default, it will always try to revert back to original aggressive programming and the engine will keep pinging. Those who purchased the export models from local distributor like Motor Image, can run their WRX on RON95 without any issue.

I run my UK model WRX on RON95 without any pinging since it was made to run at RON95 for export models.

please lar dont compare oversea quality with our .. we know ron 92 or 95 can used on our car but the things is our ron95 ddidnt up to the standard seems like something is not right ..

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Added on July 31, 2012, 6:27 pmthis comment so many cars got burn nowdays . is very sensitive here .. later someone will say those who believe ron95 cause damage and car burn will say we are all dumb and stupid and say their sport car evo.wrx gtr using ron95 no problem .. and their relative who live at oversea mostly will say USA using ron 92 also no problem ..

if i 'm driving sport car u shoot me to dead i also will not use ron95 lar ..

then some will say ai ya car only mah got problem sell buy new car ..to me this is the most stupid response .. car is liability even if u are rich can pay cash on your car the next day u sell u will lose 15k at least lar.. got so many money to waste then pump ron95 ????

This post has been edited by keanutan: Jul 31 2012, 06:27 PM

We get our petrol from overseas too since we don't refine them all in Malaysia. We export crude oil but import refined petrol. I don't find anything wrong with our RON95 even with my turbocharged engine. What's wrong with your car?

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Added on July 31, 2012, 6:35 pmWhy use RON97 when the car does not need it? Driving a sports car does not mean it needs RON97 unless you get a grey import JDM model. My car is made for a country that does not sell RON100 and runs on RON95 as per the owners manual. All new sports cars nowadays exist in both JDM and export models and both are tuned differently. Gone are the days of people driving an EVO 6 in UK/US trying to hunt down petrol stations that sells premium RON 98.

This post has been edited by sleepwalker: Jul 31 2012, 06:35 PM

i got 2 car (1 local 1 jap) , after the intro of ron 95 and been using for not more then 2 years both develop problem which is first the engine hot and air cond start giving problem later engine oil leaking both car happen in betwwen 6 months times .. now own new car dont want use ron97 that all i want to say .. then some one just come out from no where and say stupid to think ron 95 cause engine damages . maybe on ur case is ok . but mine 2 cars already same problem , u think my third car still want to use ron95 .. as i'm not as those who say will sell their car after five years if got problem ..then buy new car .. my new buy car also say can run on ron91 and above . for me i rather use ron97 then go back to use ron95 on my new ride .. both my old car still usding ron95 though .. bcos buying car didnt gain any profit .. no point to sell the car after 5 years of usage , as our family will grow and need transport i rather give it to my son/daughter then every 5 years change car ..
maybe after few years of using ron97 my car will give me less problems??

mind i ask you, how u know the car parts spoil due to the petrol RON rating 95 or 97??? my other car use ron 95 for 10 years no problem so far.... then now new car still using ron 95 . still same no problem.

for me normal car use ron97 is such a waste.... they use ron97 due to they can use a more agressive mapping to let the engine produce higher power. if your engine is compatible with ron95... u pump 97... got what diff??

then ur car can use ron95 mine dont know why cannot .. i travel a lot before the launch of ron95 my car no problem not new car second hand local car .. before the ron95 use for 5 years no single problem service every 5k fully syn .. after ron95 use no more then 2 years gasket blow . oil leaking from distributor .. engine become hot . some will say it is coincidence .. i dont know i just dont trust our ron95 .. ur car use ron95 no problem u can continue to use i didnt force u ..

now my old car still use ron 95 bcos already know what need to service every year before the problem come out..

new car no ron95 ron 97 all the times .. u say it a waste to use ron97 if the car can use ron95 . not for me .. i rather pay extra now then have problem later that all .

thats the thing bro, many are disputing the fact that you related your engine troubles with the petrol you pump ? might be how you mantain your car ? or you might need to change your mechanic ? i know my brother had issues with his cars, and he had both a local and a jap. i took one good look at his engine bay and i can identify many wrong things. told him to bring his cars to the mechanic i send mine too, and after the fella work on his cars, my brother now no complains. the engine runs well, is quiet and he postponed selling his local car to a few more years. he is even happy with the work the fella did on his jap car.

anyhow, no one stopping you from pouring ron 97 , but i would suggest that the next time you get engine troubles, try get an opinion from a few shops before fixing your car.

one thing to ponder...have it ever occur to u that the life span of the gasket or oil seal or whatever just happen to reach its limit when ron95 was introduced?

u did mention u travel a lot...

if ur point is ron95 perform poorer compare dto ron97 then that makes sense...to blame ron95 caused damage to the engine well there's no solid fact or thorough test done to justify wasn't it?

car burnt a lot nowadays...i wonder why nowadays with the introduction of so many accessories so many kedai abang like accessories shop...we've got now the famous drl, the f1 3rd brake light style, LED all over, HID amplifier crossover blablabla u name it...it only needs one wrongly installed by amateur and it could make the wiring gets hot and trigger sparks at the battery area which COINCIDENTALLY resides in the engine bay and somehow near the petrol or engine combustion area and kaboommm people wont blame the wiring they blame the petrol instead...

got what i'm trying to point out?

oh well i'm no genius i just think what might be logical...i can be wrong so suit urself...as long as ure happy with ur ron97 and others are happy with their ron95 why bother?

just my piece of thoughts...

i dont buy wat u and your mechanic talking ....

unless u are talking u driving a car need RON 97 , but u use RON95 all the time, so cause SERIOUS knocking. then this is other story, cause it can cause engine damage.

do you have any idea what RON rating about??

i always ask those people who pump 97 for their car.... some of them answer to me... RON95 oil dirtier than RON97

This post has been edited by nzh0920: Aug 1 2012, 01:53 AM

U think everyone driving fake car as you... people driving T&H good car need take care engine... pump RON97 is good idea!

I would say most of the ppl would have not encountered such problem as yours.
you give out very big amount of information that can beat your own statement.
You travel a lot before the launch of RON95. When you started using RON95, hello, your car is at much higher mileage. And a local 2nd hand car that is used for 5 years. Come on. We all know our local car is not that reliable, but you have been driving a 2nd hand local car with 5 years without problem. you put the blame on petrol rather than your car or parts. is just like you rather believe that your new handphone charger damage your phone rather than thinking about the age, reliability and other factors.
No one is stopping you from pumping RON97. We are only telling you that it is not necessary to use the money. why would Car manufacturer want to cheat you on the minimum RON required for the car. the testing and tuning of the car is run on that particular RON and sold to the people. And are you thinking that they use overseas petrol to tune your car and when you pump the same RON95 you get a fake RON95??
it is like saying that the I-phone in US is better than the I-phone in Malaysia. I think that is what you say.
go ahead and use ron97 for your new car. but please make sure the mileage of the car and the age of the car is the same as the car you encountering problem before you say that RON95 really damage your car. dont come and tell us that your new car after using it for 2 years got no problem because using RON97. Your old car is more than 5 years car when you using RON95.

so both local and japanese car leaking engine oil, become hotter, and aircond got problem??
come on. since you are so confirm that the car problem comes from RON95, why you did not service the broken part and never to use RON95 again?? if you are able to confirm that it damage your car, you are just being too clever at your own statement. You mention that you rather pump RON97 than spending the money to fix your car. but then you still let your old car use ron95. are you saying that your old car dont need servicing and repairing?? if yes, you should use RON97 on your old car. I cant believe someone that can be so certain of something damaging its own car but still willing to spend the money to repair. As you said, you dont buy car and sell car every 5 years because you dont gain. so as you are so confirm RON95 damage your car, you should start pumping RON97 for them. then you can use your car without problem. as you are so confirm that it is RON95 that make your car have those problem, you will not have those problem anymore.

Btw, you should share where is your mechanic, so that i wouldnt mistakely go there. He is more pro than those engineer in car manufacturing and petroleum.

Seriously one question, you think your satria will not have any problem you encountering now if you use RON97 all the while??

This post has been edited by jasonloh7906: Aug 1 2012, 04:15 AM

Saying ron95 damages your aircon is like saying thanks to food poisoning, you're blind and deaf

we should push the gov to introduce ultra low sulfur petrol and diesel.