Thursday, November 17, 2005 - 08:47 pm, by: Morgan Cross(Morgan)
Shell Optimax Extreme The power of 100 octane With the natural quality of ethanol
Optimax Extreme White Horse
Shell Optimax Extreme is a new super-high octane fuel with a minimum octane rating of 100, the highest currently available at any Australian service station. Shell Optimax Extreme is formulated with 5% ethanol.
Shell Optimax Extreme is formulated to deliver more engine responsiveness, sharper acceleration and enhanced power in many modern and high performance vehicles compared to other Shell premium fuels.
Ethanol is a renewable non-fossil fuel produced in Australia. When used in fuel it’s a cleaner burning, renewable component that helps to reduce Greenhouse gas emissions. In addition, through the formulation with ethanol, Shell Optimax Extreme has a substantially lower sulphur and benzene content than the maximum levels set under the Federal Government’s fuel quality standards. Ethanol is a cleaner burning, renewable fuel component that helps to reduce Greenhouse gas emissions.
Thursday, November 17, 2005 - 09:04 pm, by: David Vaughan(Davidv)
According to the Aus Manufacturers' site, Toyota/Lexus cars using the 1UZ and 1JZ engines are OK, going by the models they list. For information on the differences from 100 octane fuel with 5% ethanol, see here: https://soarercentral.com/sc-forum/messages/126/17729.html#POST42758
This result is consistent with previous threads on ethanol. Owing to the lower energy content, fuel consumtpion will rise. However, it is quite possible to run a high octane rating. If you have consistent access to 100 octane, feel free to tune via your Unichip to the new rating if the power gain is cost-effective. If you have some other ECU rather than a piggy-back, see Manny's warning above.
In previous threads I have strongly favoured using 98 octane, and my car is tuned to take best advantage of it. However, there is only one site in Canberra selling 100 octane and only a few in Sydney, and I have not yet seen the prices, so I am in no hurry to re-tune.
Previous
