Thx bro, our hope that proton will react more pro-active into these issues...

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Added on July 5, 2012, 9:23 amBut, my dad asked me to pump ron 97 full tank in every one or two months (depending on the usage) if we use
ron 95 woh.. coz 97 can burn better and in the proses, it cleans the engine.. True or not ah??

This post has been edited by Turbocrazy: Jul 5 2012, 09:27 AM

My understanding is the higher the RON the harder to burn the fuel thus better for high compression engine (powerfull engine). In other word RON95 will burn faster than RON97 which no good for performance engine.

If the engine already design to work with RON95 it should be OK to use RON95, and using higher RON will be better I guess.

If the engine design to work with RON97 or higher than it is not good to use RON95 since the fuel will burn/ignite faster than the engine spec thus the engine is NOT at it optimum performance.

This post has been edited by klate: Jul 5 2012, 10:00 AM

yeah..ppl been talking about filling with ron97 once in a while..
dunno myth or wat

I also done that unknown idea every 3 months. When fuel nearly empty I pump 1/2 full tank with Shell Ron97. During this time my car pick-up improved & when pump back Ron95 it performance slowly drop.

but FC improves?

why only half tank?

Expensive ma!

May be now can pump full tank.

The difference is between having to take a loan or no loan. No loan = no worries.

Improved a bit!

rm 143 vs rm104

If I'm the Proton staff I can't feel my income totally blessing (diberkati). In Islam no transaction if buyer not totally agree/satisfied with the product condition.

Just imagine if our country had customer protection policy like US, 30 Days Moneyback Warranty! Proton may be...

This post has been edited by jemmi: Jul 5 2012, 10:40 AM

I did switching From Ron95 to RON97 for my Volvo 850T5 few times to see if it does improve the ride.

Going from RON95 to RON97 make my car feel worst initially and getting better over time. Same experience going back to Ron95 from RON97. So I feel no point keep switching since my car minimum requirement can take RON95.

My theory on why it behave that way is since the car has an active ECU, the car will learn and adjust the ignition timing accordingly to the fuel characteristic. When uou switch to RON97 from RON95, the car ECU setting is still for RON95 so it will be bad initially but getting better eventually after the car had adjusted to the RON97 timing. Going back to RON95 will have same effect.

UNless I'm pushing my car to the limit which make full use of high compression capability (I won't do that since the car can go well beyond 200km/h) than I don't need to use RON97.

This post has been edited by klate: Jul 5 2012, 10:55 AM

But, from my experience for my old W124 merc, using ron 95 can hear the valves knocking sound while 97 dun have..
What I know is 97 has higher octane while 95 has less which means 97 performs better..

for FC savings, RON 97 worth it for EB?

EB already powerful enough, no need RON 97 extra kick

Improper ignition timing (due to lower RON rating) can cause knocking ..... what is the W124 engine spec? If its original spec call for RON97 than using RON95 is not the best.

True enough, our CFE got good power, I reckon, in the long run we have to pay more for the fuel if we cont. to use
97.. At the moment, I like to find out, izit necessary to used 97 as a cleaning agent, once a while..

Octane ratingFrom Wikipedia, the free encyclopedia Jump to: navigation, search

Octane rating or octane number is a standard measure of the performance of a motor or aviation fuel. The higher the octane number, the more compression the fuel can withstand before detonating. In broad terms, fuels with a higher octane rating are used in high-compression engines that generally have higher performance. In contrast, fuels with low octane numbers (but high cetane numbers) are ideal for diesel engines. Use of gasolines with low octane numbers may lead to the problem of engine knocking.[1]

This post has been edited by klate: Jul 5 2012, 11:21 AM

Sendoh-7 dude,

You dun know, meh?? Half tank ron97 and half tank ron 95 = you get ron96.. become scientist liao..
Actually, I did that on my old merc.. I observed no knocking sound..

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Added on July 5, 2012, 11:36 amThx bro klate for this info. Knowing that 97 is more superior, I will cont' to pump ron97 once a while..

This post has been edited by Turbocrazy: Jul 5 2012, 11:38 AM

have to know what causes the engine knocking
if the engine calls for min 95, still no reason to use higher octane fuel

would the ecu delay the ignition timing if we use ron97?

[quote=Turbocrazy,Jul 5 2012, 09:16 AM]
Thx bro, our hope that proton will react more pro-active into these issues...

OMG, heard from my friend some dude has changed the valves twice, still the same.. Still no feedback from SC
Been very patient, gonna visit them this sat, wanna screwwww them liao...