Fuel Injector Cleaner update

Honest John Back Room » The Back Room Archive
What is life like with your car? Let us know and win £500 in John Lewis vouchers | No thanks
View Threaded
Wed 5 Dec 2001 13:28
Fuel Injector Cleaner update - Dan J
For anyone with a petrol car that is a few years old the following might be of interest:

1.8i Cavalier 1993 MY [with catalyser]

Week ending 04/11 = 35.8 mpg over 411 miles
Week ending 11/11 = 36.1 mpg over 386 miles
[Average = 35.95 mpg]

After using STP Fuel Injector cleaner in two-thirds of a tank of petrol

Week ending 25/11 = 38.1 mpg over 427 miles
Week ending 02/12 = 37.7 mpg over 372 miles
[Avergae = 37.9 mpg]

All 4 weeks very similar driving speed/traffic-jamwise over the same routes.

As I drive approx 400 miles per week this represents a difference in just under 3 litres of fuel per week which equates to a saving (at 72.9p/litre) of about 100 quid a year.

Not bad for something which cost a fiver though it does specify usage every 3000 miles. Just as simple is buying a gallon of paraffin and using (I think David W's) suggestion of 1ml to 1l every month or so. The car also runs much more smoothly at constant revs and there has been a slight but noticeable improvement in idle stability.

Dan J
Reply | Report as offensive | Link
Wed 5 Dec 2001 22:25
Re: Fuel Injector Cleaner update - El Dingo (Martin)
Does HJ recommend this? It certainly seems worthwhile...
Reply | Report as offensive | Link

Our honest used car pricing is a little bit different to all the others. You can get to our values through make or model - you don’t have to follow a prescribed route. Plus, it’s live, which means we can react to changes in the market quicker than any printed price guide.

Honest Used Car Prices

From which small car to buy at which price point to the best UK-built cars, our Top 10s have the lot. Click now for your shortlist.

Unsure of what to buy? Our Top 10s are here to help you....