General Leaded/Unleaded?
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General Leaded/Unleaded?
chris.fulton
New member
The punto engines are designed to run on unleaded. Where are you from anyway because you can't even buy leaded petrol in the UK anymore, its LRP now and even then not all forecourts supply it?
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what is LRP?
chris.fulton
New member
LRP = Lead Replacement Petrol
Since 2000, leaded petrol was no longer available in the UK, LRP was brought out for older cars that could only use leaded petrol (ie couldn't use normal unleaded). See link for more info
http://www.theaa.com/motoring_advice/fuel/LRP.html
Since 2000, leaded petrol was no longer available in the UK, LRP was brought out for older cars that could only use leaded petrol (ie couldn't use normal unleaded). See link for more info
http://www.theaa.com/motoring_advice/fuel/LRP.html
You could run on leaded if you take off catalysator, engine runs better cause it has more octanes, quite a few people do this at my country but I'm not sure how much and if it damages the engine
the 55s punto runs on unleaded although the engine was originaly designed to run on 4star (leaded) petrol
4star is available in the uk but mainly through classic car clubs
if you run on leaded the car would most likely fail the mot
4star is available in the uk but mainly through classic car clubs
if you run on leaded the car would most likely fail the mot
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crabbo_1
Established member
Shell Optimax Unleaded 
It's a bit dearer...and won't make a smeg worth of difference....but it'd be better than leaded.
It's a bit dearer...and won't make a smeg worth of difference....but it'd be better than leaded.
1% percent of the total fuel consumption still can be supplied as Leaded Fuel. I know at least one station that supplies it in the Banbury area. This is meant to be for classic cars only.
This is true - and it should be left for classic cars, to avoid their valve-seat-recession problems on 30+-year-old engines.
I have always run FIATs on unleaded, even the 128s from the 70's. I have never heard of valve seat problems on any FIAT.
So the correct fuel for the Punto 55S is 95 octane unleaded.
Here in NZ, we can't buy leaded fuel at all and haven't since 1995. However, many racers use leaded AvGas, obtained by dubious means.
-Alex
What you do is you get out a little fuel-test gauge and measure the octane - haven't you got one? Oh and RON is someone who invented petrol.
LOL - just kidding
R.O.N. = Research Octane Number. This is a value measured or calculated from the fuel chemistry. As distinct from Motor Octane Number, which is measured from a calibrated test engine. M.O.N is what the Americans use; the numbers are lower for the same fuel octane.
As for which petrol is which octane, I had to wait in a queue to ask the staff that myself when I visited England
It's strange how there are no staff on the forecourt helping people out - whatever happened to 'service'... it's starting to go that way here as well. Just today I helped a lady to operate EFTPOS-at-the-pump at the supermarket, which started to sell petrol a couple of years ago, but only self-service (you just swipe your card and press buttons at the right time, enter a discount voucher code that depends on how many groceries you bought, and then fill up. I can't understand why, in England, you have to wait in a queue to pay...?)Our pumps have '91' or '95' written on them, which makes it easy. Some of our service stations sell 'Mobil Synergy 8000' or 'BP Ultimate', which are both 98 octane (and again the pump makes this clear).
But when I was in England, pumps are marked with things like 'Super', 'Premium', 'Optimax' etc. The rule of thumb I used was, if there were three prices of petrol available, I chose the middle one, and if there were two prices, then I chose the more expensive.
Oh and I avoided the one named 'diesel' (we don't have many diesel cars in NZ)-Alex
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Most UK petrol is 93 or 95 RON. It's called "Unleaded" or "Premium Unleaded" (as distinct to "Super Unleaded" which is 97/8 RON and all other "Super" varieties such as Optimax (the price kind of gives it away).
Punto is well-'ard. It'll run on the cheapest unleaded the garage sells.
Don't use leaded as it will destroy the catalysts (you'll fail MOT test on emissions).
The "Leaded" fuel nozzle is bigger anyway.. and won't fit in the Punto's filler neck.
Ralf S.
Punto is well-'ard. It'll run on the cheapest unleaded the garage sells.
Don't use leaded as it will destroy the catalysts (you'll fail MOT test on emissions).
The "Leaded" fuel nozzle is bigger anyway.. and won't fit in the Punto's filler neck.
Ralf S.
well back in the day not very much but its basically tank capacity in litres turned into £'s!
i think its 47 litres so at £1 a litre: £47
i think its 47 litres so at £1 a litre: £47
England, UK.
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It must be over 40, on mk2 is 50-55 but I never poured more than 45, and I was very very low, so I dont get it....
Anyway, it's that times the price of 1 liter.
In my country for example, EUR got cheaper, and prices got up, so now it's 1.2 EUR/liter
Anyway, it's that times the price of 1 liter.
In my country for example, EUR got cheaper, and prices got up, so now it's 1.2 EUR/liter
the thing about most fiat engines they can run on almost any fuel without any modification
i know of manypeoplethat have leaded cars running on unleaded fuel without any problems as said there just well ard were as back in the day many other manufacturers had to make modifications to there engines valves and pistons
how ether running unleaded cars on leaded fuel will eat your cat up but will actually cause less wear to your engine
the only fiat/alfa engines that will see a power gain from higher octain fuel are engines with fuel injetion that has a knock sensor listening for detonations
as these engine run the timing on the edge of pinking for maximum power meaning with higher octain they can advance the timing a bit
were as no knock sensor engine cannot they run a little retarded compared
if you have an old fiat that has a dizy be it points or haulafects you can manually alter the timing to suit the octain of fuel you use
i know of manypeoplethat have leaded cars running on unleaded fuel without any problems as said there just well ard were as back in the day many other manufacturers had to make modifications to there engines valves and pistons
how ether running unleaded cars on leaded fuel will eat your cat up but will actually cause less wear to your engine
the only fiat/alfa engines that will see a power gain from higher octain fuel are engines with fuel injetion that has a knock sensor listening for detonations
as these engine run the timing on the edge of pinking for maximum power meaning with higher octain they can advance the timing a bit
were as no knock sensor engine cannot they run a little retarded compared
if you have an old fiat that has a dizy be it points or haulafects you can manually alter the timing to suit the octain of fuel you use
