Register Login
The UK's No.1 Chrysler Owners Forum
Thread Tools Search this Thread
Old 12-12-2014   #16
Join Date: Feb 2013
Location: isle of wight
Posts: 927
Thanks: 58
Trader Rating: 0
triumph7 has donated!
United Kingdom 
Re: Software update makes a big difference

Quote Originally Posted by Herts Hillhopper View Post
You need to do the maths... Super unleaded is up to 10p a litre more expensive. So that means its over 45p a gallon more than 'regular' unleaded petrol. You'd need considerably more that 3-4mpg improvement before you recover this extra cost of the fuel.

The car's ECU is set up to use 95 RON fuel. Giving it something better is not likely to deliver a noticeable improvement in power. Conversely, a car designed to use Super Unleaded will run on the weaker stuff (not so well, admittedly) because the ECU is programmed to compensate if it detects pre-ignition.

Only real advantage (and so not needed every tankful) is that the Super Unleaded fuels have (according to Esso) double the engine-cleaning detergents in them. But since a modern, fuel-injected and computer-controlled engine runs very 'clean' anyway (when did you last see a soot-covered spark plug?), how much benefit this will bring is also questionable. If you look at the websites of the various fuel companies, it is the 'cleaning power' of the super unleaded fuels that they talk about most, rather than any improvement in actual power:
The alfa I was on about is a jtd, but I take your point. The main aim is for the cleaning property from the occasional fill up cos it really does drive better....
Likes Aikidoamigo liked this post
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

triumph7 is offline Reply With Quote Quote 
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump
Similar Threads
Thread Thread Starter Forum Replies Last Post
(Tu) difference in fuel makes roy lovelock Stilo 14 07-08-2010 02:08
(G) What a difference a wheel trim makes.... Nick2 500 5 06-04-2010 17:01
What a difference a day makes.... Greg FIAT Boo Archives 4 27-03-2008 12:28
The Difference an AMP Makes... :D MiG I.C.E 5 09-05-2007 18:50
The difference a year makes :) Darren FIAT Boo Archives 11 18-02-2007 00:14