What's The Difference Between RON95 and RON97

Nov 22, 2010
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I have been mixing Petronas PRIMAX 97 with PRIMAX 95 all the while and I have come across from facebook.com/petronsbrands today published that PRIMAX 97 caters to those who wants POWER in their car performance, while PRIMAX 95 caters to those who wants fuel that gives more MILEAGE. Izzit true? Do we feel the differences?
 

xtremeleo

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xtremeleo

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I have been mixing Petronas PRIMAX 97 with PRIMAX 95 all the while and I have come across from facebook.com/petronsbrands today published that PRIMAX 97 caters to those who wants POWER in their car performance, while PRIMAX 95 caters to those who wants fuel that gives more MILEAGE. Izzit true? Do we feel the differences?
its okie to mix both sir, nuthing bad will happen, at least nuthing bad has happened to any of my rides when mixing these two fuel grades..

RON97, being a higher grade fuel, allows a more aggressive tune compared to the 95. i think RON95 saves fuel and gives more km by volume jer, u know.. u get more per ringgit for the RON95, so u can go farther by having more volume
 

papagoines

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papagoines

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its okie to mix both sir, nuthing bad will happen, at least nuthing bad has happened to any of my rides when mixing these two fuel grades..

RON97, being a higher grade fuel, allows a more aggressive tune compared to the 95. i think RON95 saves fuel and gives more km by volume jer, u know.. u get more per ringgit for the RON95, so u can go farther by having more volume
just want to add, don't confuse RON with fuel quality... RON is just a measure of the resistance of petrol to engine knocking Octane rating - Wikipedia, the free encyclopedia@@AMEPARAM@@/wiki/File:Gas_Station_Pump_Five_Octane_Ratings.jpg" class="image"><img alt="" src="http://upload.wikimedia.org/wikipedia/commons/thumb/0/0f/Gas_Station_Pump_Five_Octane_Ratings.jpg/280px-Gas_Station_Pump_Five_Octane_Ratings.jpg"@@AMEPARAM@@commons/thumb/0/0f/Gas_Station_Pump_Five_Octane_Ratings.jpg/280px-Gas_Station_Pump_Five_Octane_Ratings.jpg... as per quality are concerned, all petrol in Malaysia are the same since it came from the same source

the difference between brands is the quantity and quality of the additive added.... even RON95 from one brand might differ from RON95 from another brand...

...correct me if i'm wrong

Wanna ask though, just found out that my JB-JL turbo engine are tune for regular unleaded petrol circa RON92 ~ RON95.... As long as I don't meddle with the ignition curve of my engine, there's no need for me to use RON97 right?
 
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xtremeleo

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xtremeleo

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yes sir, but i think its simpler to denote RON97 is a more quality fuel den RON95, dont u think so?

on ur tuning state, there isnt any need to change to RON97, for now.. lol
 

papagoines

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papagoines

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yes sir, but i think its simpler to denote RON97 is a more quality fuel den RON95, dont u think so?

on ur tuning state, there isnt any need to change to RON97, for now.. lol
agreed.. but sadly, that is not the case
 

MKMD428

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MKMD428

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its okie to mix both sir, nuthing bad will happen, at least nuthing bad has happened to any of my rides when mixing these two fuel grades..

RON97, being a higher grade fuel, allows a more aggressive tune compared to the 95. i think RON95 saves fuel and gives more km by volume jer, u know.. u get more per ringgit for the RON95, so u can go farther by having more volume
xtremeleo..since u have experience mixing 95 and 97..just need some help..:

1. what ratio did u mix? 50% 95 and 50% 97? or is it just by logical sense..97 more..95 a little bit?
2. whats the CR for the engine that u mix with both of the fuels?

thanks man..
 

xtremeleo

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xtremeleo

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i dunno what percentage sir, i just fill any which i fill like it, most of the time its the 95. i usually fill in the 97 if i have the need for speed, oh yes.. there is a significant difference between the two, of course dats if ur ecu is able to differentiate them, and set the tune accordingly.

my cr is around 9.5 jer, but an evo3(360hp@1.7bar) dat have a much higher cr pun okie jer when boosting with the RON95, of course, it was tuned by joshua of millennium motorsport
 

papagoines

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i dunno what percentage sir, i just fill any which i fill like it, most of the time its the 95. i usually fill in the 97 if i have the need for speed, oh yes.. there is a significant difference between the two, of course dats if ur ecu is able to differentiate them, and set the tune accordingly.

my cr is around 9.5 jer, but an evo3(360hp@1.7bar) dat have a much higher cr pun okie jer when boosting with the RON95, of course, it was tuned by joshua of millennium motorsport
Wow! high boost with high CR? thought that i worry 8.7 CR on my engine could damage it in the long run
 

MKMD428

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MKMD428

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i dunno what percentage sir, i just fill any which i fill like it, most of the time its the 95. i usually fill in the 97 if i have the need for speed, oh yes.. there is a significant difference between the two, of course dats if ur ecu is able to differentiate them, and set the tune accordingly.

my cr is around 9.5 jer, but an evo3(360hp@1.7bar) dat have a much higher cr pun okie jer when boosting with the RON95, of course, it was tuned by joshua of millennium motorsport
thanks man...at least got justification..i've being listening to 'cakap-cakap' only..

anyways..mine is not turborchaged..its neovvl.

again, thanks for the info.
 

xtremeleo

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xtremeleo

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thanks man...at least got justification..i've being listening to 'cakap-cakap' only..

anyways..mine is not turborchaged..its neovvl.

again, thanks for the info.
sumtimes, cakap2 only can be a good source of info jugek, but proof is better.

a neovvl has a high cr jugek, so take note of pinging sound when booting it up sir, ur ecu may be able to adjust with the fuel RON, but in case it cant, adjust accordingly
 

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my cr is around 9.5 jer, but an evo3(360hp@1.7bar) dat have a much higher cr pun okie jer when boosting with the RON95, of course, it was tuned by joshua of millennium motorsport
wat ecu is he running there?:hmmmm:
 

afariq

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In my case ONLY with the current or old VPower the engine knocks (or pings?). Other brand 97's are ok apart from Shell. Could it be the additives?
 

papagoines

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AFAIK, additives in petrol (at least in Malaysia la) only have detergent (engine cleaning) & friction modifier (reduce friction)
 

xtremeleo

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xtremeleo

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they do have different add pack sir, imo shell's fuel is more volatile then others. maybe dats y my engine pings at aggressive tune everytime i fill shell up.. i always believe acetone isone of their add pack
 

arturo

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i second that...i get knocks real bad when i use shell...even their ron97 but esso/mobil ron95 no knocks at all...
 

papagoines

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me an avid user of ESSO/MOBIL oso... and not just about the SMILE card.... my lil turbo kancil kinda like ESSO/Mobil better... SHELL i'd use the motor oil only


p/s: can't remember the link, but there's a guy done a calculation by filling @ ESSO/MOBIL & swiping the SMILE card.... you can get more saving...... especially when you fill up at unpopular ESSO/MOBIL station, they tends to have 2x points as a promotion
 

arturo

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papagoines...seriously? i never really did check how many points i getting for each RM pumped...have to go find those ulu ulu pumps n find out.
 

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Well, I think Shell fuel pings a lot due to their additives that causes the lack of complete combustion. When I use its RON95 on my stock 4g13, it do feel more fuel saving but I could hardly rev my engine to 4k rpm, try also might can, but the engine will roar very loud but still don't feel the acceleration and power kicking in. V-Power 97 had complaints nationwide, its not surprising we are getting the same quality of fuel instead of the massive advertisement on how good it was by Shell itself. The only perfect fuel I ever used is the V Power Racing, other brands of RON97 are so good too but not the Shell Fuelsave 97. It really feels that that crap RON95.

Btw, in urban areas, there are cases where the fuel stations are using illegal fuel, happens to me where I always saw fuel lorries without any manufacturer's logo at the place I studied once. Usually at midnight only saw such lorries. Also, certain Shell stations are giving away double to four times the Bonuslink points than the amount you pumped as an initiative for you to use their fuel... It always happen to my friend, RM50 for a RM200 worth of points.. XD
 

kayour

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on my oskool ke70-4k engine-totally stok engine+ejos bocor..heheh...can go 170kmh wif petronas ron95
wif shell ron95 only 150kmh..or sumting like dat la
never try ron97...daily ride, no need expensive fuel just 2 burn
 

peterfrancis

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1) Not all petrols are equal, each monufacturer may use different grades and sources of fuel.
2) Contamination whether unintended or malicious (by stations watering down their fuel) is common in MY and causes a lot of cases of bad fuel quality.
3) If you really want to know what fuels are best and highest grade etc, make friends with the sales people for the fuels business from any major petrochemical company - they will tell you if you're good enough friends with them :-P
 

ixeo

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the difference is RON2...

RON97-RON95=RON2
 

l2s_turbo

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What about V-Power Racing? Does it really helps for a turbocharged car? I remember i read somewhere which this guy pumps V-Power Racing, his car feels more heavy than other types of fuel.. And can we mix V-Power Racing with Ron95/Ron97?
 

gOsht

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the differ between RON 95 and 97 its not much..
only differ in RON, IBP and additive.other than that is similar spec..

if u want to feel the real power use aviation gasoline its RON 101.5 wit a far better spec
feel like using NOS..had been used in my car more than a year..
 
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vr2turbo

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As far as I know, if you car does not require higher RON Rating, for example only need RON93 to run, then running on RON95 is good enough. Using RON97 does not give extra power. However if your car need RON97 to run then running on RON95 the engine will knock or ping....
 

cvkit17

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As far as I know, if you car does not require higher RON Rating, for example only need RON93 to run, then running on RON95 is good enough. Using RON97 does not give extra power. However if your car need RON97 to run then running on RON95 the engine will knock or ping....
It actually does give more power and a smoother ride. So many folks out there really thinks that RON97 really makes your car more powerful, have a cleaner and better engine. (Psst: even my boss who's an engineer also thinks so..oh my lady gaga)

Totally agree with vr2turbo! RON97 does not give you power itself. It is the additives that differ from RON95. If your car can run on RON95 or lower, use it. Pumping RON97 when ur car can run on RON95 is just wasting your money. Unless you want that little little extra boost to make ur ride smoother.
 

Dayline668

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Ppl just dun understand the meaning of ron.... higher ron is use for better suppression for knock in high performance engine, nothing more, a stock N/A like a myvi all u get is smoother rev that's it. Waste of money...

Wanna go fast turbo or supercharge it lo...
 

vr2turbo

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Ppl just dun understand the meaning of ron.... higher ron is use for better suppression for knock in high performance engine, nothing more, a stock N/A like a myvi all u get is smoother rev that's it. Waste of money...

Wanna go fast turbo or supercharge it lo...
Many think higher RON means more powerful, in fact layman terms, the higher the RON the slower the ability to burn, that is why high compression engine require higher RON. The knocking is actually denotation, means the fuel burns before compression stroke is complete. This, in the long run will damaged the engine....
 

Supra_Fanatics

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But my saga having some knocking sound lately with Ron95 :rofl: Dunno what's the sound though :rofl:
(Mivec in disguise?)
 

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Funny thing, I read a feature in a mag once, comparing different fuel grades on the same engine by dynoing the engine after each refuel. The higher RON fuel actually produce an increase of 4~5bhp...
 

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But my saga having some knocking sound lately with Ron95 :rofl: Dunno what's the sound though :rofl:
(Mivec in disguise?)
Newer cars have knock sensors, and should readjust the timing to overcome the knock.
My old school all manual, if need to, have to manually adjust.....:hmmmm: but some mention will loose power because got to turn back the advance timing.....:banghead:

---------- Post added at 12:26 PM ---------- 6 hour anti-bump limit - Previous post was at 12:24 PM ----------

Funny thing, I read a feature in a mag once, comparing different fuel grades on the same engine by dynoing the engine after each refuel. The higher RON fuel actually produce an increase of 4~5bhp...
Performance engine then yes, because they require very high RON fuel....
 

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Funny thing, I read a feature in a mag once, comparing different fuel grades on the same engine by dynoing the engine after each refuel. The higher RON fuel actually produce an increase of 4~5bhp...


it depends...

if stock engine was tuned to suits ron92/95 fuel with low compression setup then surely using ron103 race fuel also yielding no hp increase...

but high performance engine that was meant to use ron97 above surely got differences when using ron95/97 fuel....


even chap in Fifth Gear show acknowledge this...normal city car and boosted performance car yield different result with different fuel in the test
 

pwhyze

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Interesting thing was, it was tested on a regular city car, an Astra or something, can't remember....definitely not high performance car with High CR. When they tested it with Ron 99 (or Ron 100, can't remember again), they got more power...so maybe Myvi can benefit from Ron 97?? XD
 

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Newer cars have knock sensors, and should readjust the timing to overcome the knock.
My old school all manual, if need to, have to manually adjust.....:hmmmm: but some mention will loose power because got to turn back the advance timing.....:banghead:

Performance engine then yes, because they require very high RON fuel....
meaning to say, I have to send my BLM to mechanic to adjust? Will lose power or not? :rofl:
 

Dayline668

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Not that u can feel the power increase... pointless... For RM1.1/L more if u think is worth it then is your money lo... Go pump v-power racing lo...

---------- Post added at 01:47 PM ---------- 6 hour anti-bump limit - Previous post was at 01:46 PM ----------

meaning to say, I have to send my BLM to mechanic to adjust? Will lose power or not? :rofl:
Less timing sure lose power n FC... What fuel u pump lately..? test with other fuel..?
 

vr2turbo

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meaning to say, I have to send my BLM to mechanic to adjust? Will lose power or not? :rofl:
BLM quite new, but not sure if it comes with knock sensor. If yes, then no need to manual adjust....

---------- Post added at 01:51 PM ---------- 6 hour anti-bump limit - Previous post was at 01:48 PM ----------

Not that u can feel the power increase... pointless... For RM1.1/L more if u think is worth it then is your money lo... Go pump v-power racing lo...

---------- Post added at 01:47 PM ---------- 6 hour anti-bump limit - Previous post was at 01:46 PM ----------



Less timing sure lose power n FC... What fuel u pump lately..? test with other fuel..?
Exactly, will the power increase that much to pay extra RM1.1, even average at 45L per tank almost RM50 more per tank....:banghead:
V power Racing? that is another 30 sen premium over Ron 97, right?.....:rolleyes:

Lower the advance, will loose pick up also.....:banghead:
 

Supra_Fanatics

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Newer cars have knock sensors, and should readjust the timing to overcome the knock.
My old school all manual, if need to, have to manually adjust.....:hmmmm: but some mention will loose power because got to turn back the advance timing.....:banghead:

---------- Post added at 12:26 PM ---------- 6 hour anti-bump limit - Previous post was at 12:24 PM ----------



Performance engine then yes, because they require very high RON fuel....
Not that u can feel the power increase... pointless... For RM1.1/L more if u think is worth it then is your money lo... Go pump v-power racing lo...

---------- Post added at 01:47 PM ---------- 6 hour anti-bump limit - Previous post was at 01:46 PM ----------



Less timing sure lose power n FC... What fuel u pump lately..? test with other fuel..?
Used Petron once, after that not much difference, then some thing knocking sounds, I need to get
it check. Tak tak tak tak sound when idling.

After that I pump back Shell still the same...:hmmmm:

Will get it check to see parts faulty or petrol problem...
 

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Used Petron once, after that not much difference, then some thing knocking sounds, I need to get
it check. Tak tak tak tak sound when idling.

After that I pump back Shell still the same...:hmmmm:

Will get it check to see parts faulty or petrol problem...
Idling time, tak, tak, tak, maybe tappets loose. Knocking is when driving.....
 

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FYI idle also will knock...