What octane fuel should I use?
Discussion
Tony,
I've Chim 450 and can usually get about 200 - 250 miles on a tank. This is based on my normal useage which is 5 - 10 min journeys doing an average of 40 - 50 mph.
I managed to get 260 once when I was commuting between Reading and Milton Keynes, all motorway driving and sitting at a steady 80.
Perhap's I'm driving it like a girl!!!
On the note of whether to use Optimax, bear in mind that if TVR recommend ron 98, BP Super (I used it b4 Optimax) was only ron 95, whereas Optimax is ron 96 (as I understand).
But as everyone agrees, there is a noticable difference, particular, in the low revs, much smoother.
I had a fascinating conversation with the cashier at my local Shell garage about Optimax, she was very interesting in 'how I found it' and 'whats the difference' .......
Steve
I've Chim 450 and can usually get about 200 - 250 miles on a tank. This is based on my normal useage which is 5 - 10 min journeys doing an average of 40 - 50 mph.
I managed to get 260 once when I was commuting between Reading and Milton Keynes, all motorway driving and sitting at a steady 80.
Perhap's I'm driving it like a girl!!!
On the note of whether to use Optimax, bear in mind that if TVR recommend ron 98, BP Super (I used it b4 Optimax) was only ron 95, whereas Optimax is ron 96 (as I understand).
But as everyone agrees, there is a noticable difference, particular, in the low revs, much smoother.
I had a fascinating conversation with the cashier at my local Shell garage about Optimax, she was very interesting in 'how I found it' and 'whats the difference' .......
Steve
quote:
I'm clearly driving like a wuss at the moment. At the moment seeing 200-250 on just over 3/4 of a tank in a Chimaera 500.
Marshy, I expect the next 1/4 will drop straight to zero any minute now.
The best I've ever had was 23 MPG (long run steady 80). However, with Optimax there are signs that I might manage 24 or even 25 at a push.
squirrelz - "I thought the octane rating of Optimax was 98.6 RON"
thb - "it says 98 on the pump somewhere"
You're both right. The pumps do say 98RON and Optimax is actually 98.6 RON. I suspect that there is a requirement somewhere for the pump to display the RON rating as the nearest rounded-down whole number or something.
thb - "it says 98 on the pump somewhere"
You're both right. The pumps do say 98RON and Optimax is actually 98.6 RON. I suspect that there is a requirement somewhere for the pump to display the RON rating as the nearest rounded-down whole number or something.
I reckon I am getting just around 200 to a tank driving in town in a 450.
I think I have had around 250 in a run to the cotswolds and back again.
Might give that Optimax a go, as no one seems to have encountered problems and if its makes it idle more smoothly (running in with mineral oil makes it well lumpy apparently, at least thats what the dealer said!) then I am all for some of that.
Matt.
I think I have had around 250 in a run to the cotswolds and back again.
Might give that Optimax a go, as no one seems to have encountered problems and if its makes it idle more smoothly (running in with mineral oil makes it well lumpy apparently, at least thats what the dealer said!) then I am all for some of that.
Matt.
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