99 Ron Petrol @ Tesco

[Blue84]

Hi All,

Saw this thread in the Celica Forum recently Tesco Release 99 Ron Petrol and, after using up a lot of petrol this week took a trip to one of the Tesco's that is trialling it. Well when I say "trip" I mean 3 miles to Lakeside, the nearest Tesco here! And filled up - 87.9p a litre. Usually get BP Ultimate, 97 Ron at 91.9p but I've had enough of paying that much for petrol, it's not fair on motorists as they get so much profit. Anyone else been able to try it yet?

Have spoilt the Blue a bit this week, she got a clean with Meguairs Gold Class Shampoo on Thursday, and thoroughly cleaned alloys. Today I hoovered all of the inside, took her out in the gorgeous sunshine with air con turned on and got her 99 Ron petrol, and in a little while will clean the interior surfaces as she's a bit dusty. Was chatting to one of my Neighbours and got a compliment on the colour of her too :).

Took this photo of her still looking clean after we had been to Tesco:

Blue

[jay dh]

i havent tried it or any other higher ron petrol, i dont think the benefit (if any) is worth the extra cost, im waiting to be proved wrong tho...

liking the colour of blue

Jay

[SMW]

I've put 3 consecutive tanks of 99 through the IS now and I haven't noticed any real improvement apart from it feeling a bit smoother through the rev range. This could be placebo though.

Still on the fence on this one.

[Demonic Angel]

I still think BP Ultimate/Shell Optimax etc etc are placebos - same with 99 RON Tesco petrol!

I've said it on every other fuel post before and I'll keep on saying it - my car runs fandabulous on bog standard 95 RON fuel and its all just sugar-coated pills! You think its running better, therefore it is running better!

I think Tesco Finest Chocolate Pudding tastes better than normal Tesco Chocolate Pudding - but its all just chocolate pudding! ;)

It doesnt matter anyway - it'll be 3 years before the Tesco in Rugby gets it!

[earpl]

i run ultimate but they didnt have any the other day so i filled up with 95, along with putting my seats and subs etc back in the car. and well, im not impressed. tesco's tonight!

[jay dh]

i run ultimate but they didnt have any the other day so i filled up with 95, along with putting my seats and subs etc back in the car. and well, im not impressed. tesco's tonight!

←

gettin tesco's 99ron wont make the difference, its the weight u added to the car

Jay

[earpl]

oh it does, ive noticed differences on running with the car empty on ron95 and empty on around ron100. it does make a difference

[Blue84]

I know that there are plenty of different opinions on whether high ron fuel is worth it or not, it's personal choice at the end of the day. Some people say it works, some dont - I find that the economy is much better with higher ron petrol, and that is important to me as I do a 22 mile all round trip to and from work 4 days a week.

So no-one else has been able to try it yet? There is a list of the stations that are trialling it on that thread I linked to above.

Blue

[ferrariboyuk]

i wouldn't touch tesco petrol. Only big names like BP and Esso for me. Unless i was in need of 5 pound worth to get home and tesco was my only choice. I've heard that its poor quality and increased the build up of deposits around the valves, leading to poor performance.

DOM

[earpl]

sainsburys is bp fuel.

[Moffmo]

i wouldn't touch tesco petrol.  Only big names like BP and Esso for me.  Unless i was in need of 5 pound worth to get home and tesco was my only choice.  I've heard that its poor quality and increased the build up of deposits around the valves, leading to poor performance.

DOM

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iv seen supermarket petrols getting filled up with bp tankers etc

Its whats currently cheaper at the end of the day

[scionic]

i havent tried it or any other higher ron petrol, i dont think the benefit (if any) is worth the extra cost, im waiting to be proved wrong tho...

liking the colour of blue

Jay

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It is a scientific fact that higher octane than the engine is designed to run does absolutely nothing.

Beleive it.

(Using the American Octane ratings here but the principle is the same)

If your car is designed for 87 then 93 will do nothing.

If your car is designed for 93 and you use 87 your car will !Removed! timing, hurting your performance.

That's where the "myth" of octane and performance came from.

The RON number is simply and index of the petrols resistance to pre-ignition. THAT'S ALL. It's not how many extra horsepower you get. It's not how many grams of magic horsepower fairy dust is in the fuel. It is an index of resistance to pre-ignition. If you don't have high compression, advanced timing and/or forced induction than odds are you have nothing to gain.

Follow your owners manual.

These are the FACTS, not my opinion.

Anyone who's unsure is welcome to do their own research and you will find I am correct.

[CAMSHAFT]

i havent tried it or any other higher ron petrol, i dont think the benefit (if any) is worth the extra cost, im waiting to be proved wrong tho...

liking the colour of blue

Jay

←

It is a scientific fact that higher octane than the engine is designed to run does absolutely nothing.

Beleive it.

(Using the American Octane ratings here but the principle is the same)

If your car is designed for 87 then 93 will do nothing.

If your car is designed for 93 and you use 87 your car will !Removed! timing, hurting your performance.

That's where the "myth" of octane and performance came from.

The RON number is simply and index of the petrols resistance to pre-ignition. THAT'S ALL. It's not how many extra horsepower you get. It's not how many grams of magic horsepower fairy dust is in the fuel. It is an index of resistance to pre-ignition. If you don't have high compression, advanced timing and/or forced induction than odds are you have nothing to gain.

Follow your owners manual.

These are the FACTS, not my opinion.

Anyone who's unsure is welcome to do their own research and you will find I am correct.

←

true, if its not tuned to run on a high octane then there is no real point to it, over here in Ireland we don’t get anything higher than 95 Ron much at all, until not it did not bother me but my ecu is now tuned for 99 Ron so I need to use it. I ran it for the second half of last week on 98 Ron and it was sweet as a nut, but because the only petrol station with 98 Ron is 46 miles I tried normal 95 Ron on Saturday and by Sunday I had a misfire a 4000rpm, so last night I drove the 45 miles to get the higher stuff and filled it up, by the time I got home it was perfect again, so I my humble option if your engine is not tuned for higher octane then there is no real need for it.

[dicey2k]

I know that there are plenty of different opinions on whether high ron fuel is worth it or not, it's personal choice at the end of the day. Some people say it works, some dont - I find that the economy is much better with higher ron petrol, and that is important to me as I do a 22 mile all round trip to and from work 4 days a week.

So no-one else has been able to try it yet? There is a list of the stations that are trialling it on that thread I linked to above.

Blue

←

But are you really saving... Sure the economy may be better... But you are spending more per tank of fuel, so i think the save is minimal in the end!

I did put optimax in my corsa once, thought it was ok but couldnt justify spending a small fortune on a tank of fuel... Petrol is too expensive as it is without spending silly money unnecessarily!

[ferrariboyuk]

But are you really saving... Sure the economy may be better... But you are spending more per tank of fuel, so i think the save is minimal in the end!

I did put optimax in my corsa once, thought it was ok but couldnt justify spending a small fortune on a tank of fuel...  Petrol is too expensive as it is without spending silly money unnecessarily!

←

I agree. I put BP ultimate (think its 98) in my 1 litre purely coz they didn't have 95 petrol. I didn't think it was worth it. I was conscious that i was on 98 and was thinking.... "is that better acceleration" but.... na!

The manual says to use 95. Therefore its not suited for anything else. Not even my Tsport tho i might be tempted to experiment one day!

[Demonic Angel]

I agree.  I put BP ultimate (think its 98) in my 1 litre purely coz they didn't have 95 petrol.  I didn't think it was worth it.  I was conscious that i was on 98 and was thinking.... "is that better acceleration" but.... na!

The manual says to use 95.  Therefore its not suited for anything else. Not even my Tsport tho i might be tempted to experiment one day!

←

So the Yaris is set to run at 95 RON anyway then?

So not only is a higher RON a waste of money, it also will do nothing to the Yaris engine because its configured for 95 RON...?

[ferrariboyuk]

i take it its a waste. Take a look at your book. I saw it at the back i think. Near the specification section and tyre pressure page.

[A.T.G]

If i remember reading correctly it depends where you cars been built.... The french built ones are around 95 RON and the japanese about 100.....

Really can't remember so don't quote me...

Which technically means if its a French fancy, running 99 RON won't make any difference, while it would in a Japanese made car.... Could be why theres such a difference in opinion?...

Also i worked in a Tesco's garage briefly and it was BP who filled us up

[ferrariboyuk]

Both my jaris' are Japanese and nothing but i still gotta try the TS.

[CAMSHAFT]

A.T.G,May 16 2005, 04:14 PM]

If i remember reading correctly it depends where you cars been built.... The french built ones are around 95 RON and the japanese about 100.....

Really can't remember so don't quote me...

Which technically means if its a French fancy, running 99 RON won't make any difference, while it would in a Japanese made car.... :

TRUE

Demonic Angel,May 16 2005, 03:37 PM]

I agree.  I put BP ultimate (think its 98) in my 1 litre purely coz they didn't have 95 petrol.  I didn't think it was worth it.  I was conscious that i was on 98 and was thinking.... "is that better acceleration" but.... na!

The manual says to use 95.  Therefore its not suited for anything else. Not even my Tsport tho i might be tempted to experiment one day!

←

So the Yaris is set to run at 95 RON anyway then?

So not only is a higher RON a waste of money, it also will do nothing to the Yaris engine because its configured for 95 RON...?

TRUE

i need to use 98 ron as my ecu is tuned to run on it, but 99.99% of Yaris here are tuned to run on 95 ron, IMO it is a waste of money to run 98 in a 95 car, its like using bottle spring water in your window washers to wash you window, waste of money, it will do the job if you have money to waste

[ferrariboyuk]

like using bottle spring water in your window washers to wash you window, waste of money

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doh!

[earpl]

lol done that before.

right 2 things!

1. ultimate is 97RON NOT 98!

2. it does give you better performance cause it says it does on the adverts. (if it didn't i think trading standards would have something to say)

[Demonic Angel]

2. it does give you better performance cause it says it does on the adverts. (if it didn't i think trading standards would have something to say)

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But that "better performance" was only tested on like 60 vehicles..... 60 out of the millions of cars on our roads!

[scionic]

If i remember reading correctly it depends where you cars been built.... The french built ones are around 95 RON and the japanese about 100.....

Really can't remember so don't quote me...

Which technically means if its a French fancy, running 99 RON won't make any difference, while it would in a Japanese made car.... Could be why theres such a difference in opinion?...

Also i worked in a Tesco's garage briefly and it was BP who filled us up 

←

Seems unlikely. Cars are generally tuned for the market they are going to, not according to the factory where they are built. Again, check your owner's manual for the answer to the France vs. Japan question. I seriously doubt the Japanese built ones are designed for higher octane, if that were the case and it was not labeled as such then they'd have everyone driving around with their timing retarded and less than normal hp.

I'd beleive a Vitz imported directly from Japan might use higher octane, but last time I checked the T-sport (1NZ-FE) engine in the JDM is rated at 109 or 110 bhp. Just 1-2 more than what I've got running on regular petrol.

Again, it's not a difference of opinion as much as it is reluctance of some to accept sound scientific fact over their own seat of the pants analysis and things they've heard from other misinformed people.

[CAMSHAFT]

Seems unlikely. Cars are generally tuned for the market they are going to, not according to the factory where they are built. Again, check your owner's manual for the answer to the France vs. Japan question. I seriously doubt the Japanese built ones are designed for higher octane, if that were the case and it was not labeled as such then they'd have everyone driving around with their timing retarded and less than normal hp.

I'd beleive a Vitz imported directly from Japan might use higher octane, but last time I checked the T-sport (1NZ-FE) engine in the JDM is rated at 109 or 110 bhp. Just 1-2 more than what I've got running on regular petrol.

Again, it's not a difference of opinion as much as it is reluctance of some to accept sound scientific fact over their own seat of the pants analysis and things they've heard from other misinformed people.

←

what he meant was what you answered in the second part, as in a vitz would run on 98 and a yaris would run on 95 so in other words import cars from japan should be run on 98 ron

Cars are generally tuned for the market they are going to

as in sold new,then true