Tesco 99 ron
28-10-2009, 03:32 PM
#1
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Tesco 99 ron
Is tesco 99 ron petrol any better than optimax or ultimate? its just that ive seen its got a higher ron and its generally cheaper than both of the others in my area? i always run it on ultimate normally but im trying to save some money at the minute. so has anybody got any experiance of it or uses it on turbo?
28-10-2009, 03:39 PM
#3
Same as any petrol though, unless you have a full tank of it, it'll be diluted to whatever else is in there first, also if your car sits unused for a week then gets blasted at the weekend the petrol will go off abit and loose some "oomph" 
28-10-2009, 03:46 PM
#4
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well its only mixed with ultimate or vpower its just that its off 2 motorsport developments next week and dont want to send it with duff petrol in! guess aslong as its higher rating ron than the normal stuff then its all good!!
28-10-2009, 04:35 PM
#5
st170 breaking
v power is far better in my bike (57k fireblade so good for testing stuff)
non super makes it rattle and not run well, tesco super is a little better but v power makes it run like its new and is noticably faster
non super makes it rattle and not run well, tesco super is a little better but v power makes it run like its new and is noticably faster
28-10-2009, 04:53 PM
#7
Too many posts.. I need a life!!
It is possible in hot weather for light ends to flash off in a warm tank (mostly butane).
Im sure Thorny's done a back to back test on all the above mentioned fuels, and tesco's 99 came out on top, sure it's on their website.
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28-10-2009, 05:08 PM
#10
Read on..............
According to Shell Australias Technical Advice Centre Manager, Warren Scott, you can generally store fuel in a sealed container for around six months before it starts to deteriorate. This assumes its kept relatively cool and away from direct sunlight.
But if the container is not properly sealed or its repeatedly opened, [fuel] will start to evaporate and you lose some of the light components in the fuel, Mr Warren says.
Those light components include highly important butane. As these components are lost, the fuel loses its volatility. Mr Warren says this makes the car difficult to start.
In warm conditions, fuel is especially prone to oxidisation which causes lacquer and gums to form. As a result, the fuel turns dark in colour, loses its clarity and smells like paint stripper.
Gary Whitfield, Senior Fuel Chemist at BP Australia, says that in the right conditions, fuel can last up to 12 months. But once the container is opened, the fuel will start to degrade.
Once the seal is broken, a vapour space is formed in the container and the fuel will start to deteriorate more rapidly, he says.
Okay, so what about fuel thats left in your cars tank for a long period of time?
Mr Whitfield claims fuel in a cars tank can last for up to four weeks before it becomes considerably denser. When this happens, the engine is effectively over-fuelled (without any change in injector pulse-width) and theres an increased chance of carbon deposition onto spark plugs
and inside the combustion chamber. This can cause driveability problems such as stutters and misses.
Regular unleaded fuel will lose a small amount of octane over time but in our low-sulphur and high detergent Ultimate fuel it might increase very slightly. It might increase 1 RON in four weeks but its not something Id bother chasing, he says.
Keep in mind that typical variation in BP Ultimate is 98 100 RON while normal unleaded ranges between 91 93 RON.
Mr Warren says that in most cases, its only when fuel is left in the tank for several months theres the risk of engine damage. This is much more likely to occur in cars running dual LPG/petrol systems.
By this time the fuel will have gone dark and gummy and can clag the fuel pump, filter and injectors, Mr Warren says. It can also leave a lacquer deposit on the inside of the fuel tank which is difficult to remove.
In addition, its important to be aware that fuel brews specifically fuel volatility - varies on a month to month basis. Standards vary from state to state but, generally, volatility is reduced during summer months to reduce evaporative emissions. Mr Whitfield says this typically makes the engine slightly harder to start but there is no change in octane.
Lachlan Riddel, proprietor of Gold Coast based tuning company ChipTorque, frequently dyno tests cars which have not previously been driven for several weeks.
On the fuel mix we have in Queensland, I think fuel in a cars tank is starting to go off in around three weeks, Mr Riddel says. We can tune a car, put it away for three of four weeks, come back to it and it will be either closer to detonation or less likely to make the same power.
I think local fuel is brewed to reduce evaporative emissions in warm weather and, maybe because of that, fuel really goes crappy in eight to ten weeks. By that stage, the fuel is extremely prone to detonation.
Interestingly, Mr Riddel hasnt noticed the engine becoming harder to start but the effect on octane is pronounced.
Similarly, the General Manager of Melbournes Advanced Vehicle Operations, Steve Coates, believes fuel tends to go off in a cars fuel tank quite quickly once its a couple of weeks old.
After a couple of weeks not driving a car, I find that it will be closer to detonation than it was at the time of tuning on the chassis dyno, he says.
And the brand of fuel seems to make a difference as well I find that Mobil and BP products are probably the best after being stored but Shell Optimax is really good when its new."
Clearly, there are some important factors to keep in mind when storing fuel in a container for several months or when parking your car for a few weeks.
Our recommendation is not to run the engine at high load with fuel thats been in the tank for any more than three of four weeks and its a good idea to add at least 25 percent fresh fuel to the tank every few weeks. This will help ensure there are no fuel-related driveability problems or detonation and will reduce the chance of lacquer building up inside the tank.
According to Shell Australias Technical Advice Centre Manager, Warren Scott, you can generally store fuel in a sealed container for around six months before it starts to deteriorate. This assumes its kept relatively cool and away from direct sunlight.
But if the container is not properly sealed or its repeatedly opened, [fuel] will start to evaporate and you lose some of the light components in the fuel, Mr Warren says.
Those light components include highly important butane. As these components are lost, the fuel loses its volatility. Mr Warren says this makes the car difficult to start.
In warm conditions, fuel is especially prone to oxidisation which causes lacquer and gums to form. As a result, the fuel turns dark in colour, loses its clarity and smells like paint stripper.
Gary Whitfield, Senior Fuel Chemist at BP Australia, says that in the right conditions, fuel can last up to 12 months. But once the container is opened, the fuel will start to degrade.
Once the seal is broken, a vapour space is formed in the container and the fuel will start to deteriorate more rapidly, he says.
Okay, so what about fuel thats left in your cars tank for a long period of time?
Mr Whitfield claims fuel in a cars tank can last for up to four weeks before it becomes considerably denser. When this happens, the engine is effectively over-fuelled (without any change in injector pulse-width) and theres an increased chance of carbon deposition onto spark plugs
and inside the combustion chamber. This can cause driveability problems such as stutters and misses.Regular unleaded fuel will lose a small amount of octane over time but in our low-sulphur and high detergent Ultimate fuel it might increase very slightly. It might increase 1 RON in four weeks but its not something Id bother chasing, he says.
Keep in mind that typical variation in BP Ultimate is 98 100 RON while normal unleaded ranges between 91 93 RON.
Mr Warren says that in most cases, its only when fuel is left in the tank for several months theres the risk of engine damage. This is much more likely to occur in cars running dual LPG/petrol systems.
By this time the fuel will have gone dark and gummy and can clag the fuel pump, filter and injectors, Mr Warren says. It can also leave a lacquer deposit on the inside of the fuel tank
which is difficult to remove.In addition, its important to be aware that fuel brews specifically fuel volatility - varies on a month to month basis. Standards vary from state to state but, generally, volatility is reduced during summer months to reduce evaporative emissions. Mr Whitfield says this typically makes the engine slightly harder to start but there is no change in octane.
Lachlan Riddel, proprietor of Gold Coast based tuning company ChipTorque, frequently dyno tests cars which have not previously been driven for several weeks.
On the fuel mix we have in Queensland, I think fuel in a cars tank is starting to go off in around three weeks, Mr Riddel says. We can tune a car, put it away for three of four weeks, come back to it and it will be either closer to detonation or less likely to make the same power.
I think local fuel is brewed to reduce evaporative emissions in warm weather and, maybe because of that, fuel really goes crappy in eight to ten weeks. By that stage, the fuel is extremely prone to detonation.
Interestingly, Mr Riddel hasnt noticed the engine becoming harder to start but the effect on octane is pronounced.
Similarly, the General Manager of Melbournes Advanced Vehicle Operations, Steve Coates, believes fuel tends to go off in a cars fuel tank quite quickly once its a couple of weeks old.
After a couple of weeks not driving a car, I find that it will be closer to detonation than it was at the time of tuning on the chassis dyno, he says.
And the brand of fuel seems to make a difference as well I find that Mobil and BP products are probably the best after being stored but Shell Optimax is really good when its new."
Clearly, there are some important factors to keep in mind when storing fuel in a container for several months or when parking your car for a few weeks.
Our recommendation is not to run the engine at high load with fuel thats been in the tank for any more than three of four weeks and its a good idea to add at least 25 percent fresh fuel to the tank every few weeks. This will help ensure there are no fuel-related driveability problems or detonation and will reduce the chance of lacquer building up inside the tank.
29-10-2009, 10:14 AM
#19
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29-10-2009, 10:16 AM
#20
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29-10-2009, 07:22 PM
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I've mapped on both, tesco 99 is VERY good, but V power is slightly ahead, bp ultimate is crap, in mine anyway.
One of the major problems with fuel standing in bikes, is if they have as most do carbs made of alloy, this cause certain fraction in the fuel to seperate, and do indeed lose thier poke, found after converting a carb bike to efi, could then stand a month and right on the button starting.
I always had to drain carbs after a week standing.
tabetha
One of the major problems with fuel standing in bikes, is if they have as most do carbs made of alloy, this cause certain fraction in the fuel to seperate, and do indeed lose thier poke, found after converting a carb bike to efi, could then stand a month and right on the button starting.
I always had to drain carbs after a week standing.
tabetha
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