Has anyone got any experience of one of these? http://cgi.ebay.co.uk/DemonMag-for-...286.c0.m14&_trkparms=66:2|65:10|39:1|240:1318
Save £10 per month or your money back!
This assumes a (conservative) 5% fuel saving and 15,000 miles per year travel. This mileage at 30mpg will mean you use 41.6 gallons per month (£208). Reducing consumption by just 5% gives 31.5mpg, 39.6 gallons usage per month (£198). Calculations assume petrol at £5 per gallon.
"We are so sure this kit will give you at least a 5% saving that we will refund you the full cost if you don't find this is the case."
:?
Save £10 per month or your money back!
This assumes a (conservative) 5% fuel saving and 15,000 miles per year travel. This mileage at 30mpg will mean you use 41.6 gallons per month (£208). Reducing consumption by just 5% gives 31.5mpg, 39.6 gallons usage per month (£198). Calculations assume petrol at £5 per gallon.
"We are so sure this kit will give you at least a 5% saving that we will refund you the full cost if you don't find this is the case."
:?
