Super - worth hunting out?

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Mon 12 May 2003 21:00
Super - worth hunting out? - SteveH42
I've noticed a few people on here recommend using Superunleaded both for better performance and for higher fuel economy. However, it seems to be very rare around here - I can't think of any garage I use regularly that sells it. Is it worth keeping an eye out for the odd tank-full, or am I as well off using normal UL and adding Redex or similar now and again?

If it makes any difference, the car is a 2000W Yaris 1.0. I've got no real performance or economy worries, just wondering what all the fuss is about!
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Mon 12 May 2003 22:20
Super - worth hunting out? - Doc
Super Unleaded Petrol was introduced for use in petrol engined vehicles where there is a requirement for a high-octane unleaded fuel. This grade exceeds the octane levels of Premium Unleaded Petrol and is usually rated at 97 RON.

Super is recommended for use in high performance vehicles, which are able to use Unleaded Petrol, but have not, or are unable to have the ignition setting adjusted to run on the lower octane level of Premium Unleaded Petrol.
Super Unleaded Petrol exceeds the latest requirements of the relevant British Standard Specification BS 7800.

Your car will happily run on normal Unleaded with no additives.
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Tue 13 May 2003 17:26
Super - worth hunting out? - SteveH42
Your car will happily run on normal Unleaded with no additives.


Yes, I realise that, but I've seen a few people recommend it even for new cars that are designed for 95 RON unleaded. The usual claims are either higher mpg or better performance. Just wondering if this really is the case, or if the extra cost isn't worth it for a car such as mine.

Also commenting that as it's not so widely available, it doesn't strike me as being something necessary?
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Tue 13 May 2003 19:47
Super - worth hunting out? - smokie
How come no-one has mentioned OptiMax yet? I thought it was a super unleaded...
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Wed 14 May 2003 17:21
Super - worth hunting out? - eMBe {P}
smokie - I've just mentioned it in the other concurrent thread
www.honestjohn.co.uk/forum/post/index.htm?f=4&t=12...0
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Wed 14 May 2003 14:24
Super - worth hunting out? - Pete F
If your car is designed for 95RON then there will be no benefit in performance, fuel economy or anything else by using a higher octane. A lot of people don't believe this but it is a fact.
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