Diesel injector/carbon cleaner
Discussion
So exactly how bad is teh fuel economy? And what are you expecting (you'll be lucky to get within 10% of the manufacturer's combined figures on the daily grind)
Is the problem a recent thing? i.e. did it start getting worse at about the same time as the weather started getting colder? (there have been a few threads on PH recently about fuel economy worsening in cold weather - It might be worth having a read, they make quite an interesting read)
Is the problem a recent thing? i.e. did it start getting worse at about the same time as the weather started getting colder? (there have been a few threads on PH recently about fuel economy worsening in cold weather - It might be worth having a read, they make quite an interesting read)
Having run diesels for a few hundred k, I would agree with the 'it does less when it's cold crowd', for me, around 10% less. Also, not long after using a fuel system cleaner the HP fuel pump started to leak and the injectors needed a refurb, may be coincidence, but I'm never using any again.
Edited by Dougal on Tuesday 19th January 20:37
Right...the 1st Italian tune up has been carried out...boy was that fun...will probably do it again this week.
The car has been owned by a little old lady since new. The combined figure should be 60mpg and we are getting 40mpg.....so a fair bit out....33%ish.!!!
Around town we get 30mpg
On the motorway 70mph we get 50mpg
I know it is not bad but nowhere near the amazing figure it sould be.
I'm struggling to think what it could be....has the old lady just chocked it all up with slow driving ?
IceBoy
The car has been owned by a little old lady since new. The combined figure should be 60mpg and we are getting 40mpg.....so a fair bit out....33%ish.!!!
Around town we get 30mpg
On the motorway 70mph we get 50mpg
I know it is not bad but nowhere near the amazing figure it sould be.
I'm struggling to think what it could be....has the old lady just chocked it all up with slow driving ?
IceBoy
Edited by IceBoy on Tuesday 19th January 21:06
Right...the 1st Italian tune up has been carried out...boy was that fun...will probably do it again this week.
The car has been owned by a little old lady since new. The combined figure should be 60mpg and we are getting 40mpg.....so a fair bit out...33%!!! !
Around town we get 30mpg
On the motorway 70mph we get 50mpg
I know it is not bad but nowhere near the amazing figure it sould be.
I'm struggling to think what it could be....has the old lady just chocked it all up with slow driving ?
IceBoy
The car has been owned by a little old lady since new. The combined figure should be 60mpg and we are getting 40mpg.....so a fair bit out...33%!!! !
Around town we get 30mpg
On the motorway 70mph we get 50mpg
I know it is not bad but nowhere near the amazing figure it sould be.
I'm struggling to think what it could be....has the old lady just chocked it all up with slow driving ?
IceBoy
Edited by IceBoy on Tuesday 19th January 21:07
k your injectors up and Yes they can tell!Within a little while of adding additive to the bmw it started complaining, running rough and not pulling properly.
I ended up in BMW having to have the inlet manifold off to access a small pipe that had blown off in the process - and various bits and bobs that werent happy, it didnt feel right for ages.
Not saying it was a direct cause but the car was just not happy.
IMHO a good clean out w/o cleaner and a few good long runs do the job just as well.
I ended up in BMW having to have the inlet manifold off to access a small pipe that had blown off in the process - and various bits and bobs that werent happy, it didnt feel right for ages.
Not saying it was a direct cause but the car was just not happy.
IMHO a good clean out w/o cleaner and a few good long runs do the job just as well.
Millers Diesel additives have got a strong following. I've been using them in every tank for the last 5 years with no apparent ill effects, but the cars do smoke less and are smoother with it in the tank.
Some people will report bad experiences, sometimes based on fact, sometimes just a gut feeling of course or without concrete proof. My money is with the Millers, it won't etch injectors as far as I know, but it will clean the fuel system, lubricate, and prevent corrosion. My own experience with it is good, and the opinions of members on another forum I visit.
To be honest I've never heard anything bad about it, although of course some say it's unnecessary or will void warranty etc.
Some people will report bad experiences, sometimes based on fact, sometimes just a gut feeling of course or without concrete proof. My money is with the Millers, it won't etch injectors as far as I know, but it will clean the fuel system, lubricate, and prevent corrosion. My own experience with it is good, and the opinions of members on another forum I visit.
To be honest I've never heard anything bad about it, although of course some say it's unnecessary or will void warranty etc.
Can't say for low mileage cars, but on our TD4 Freelander (BMW M47 engine), it started idling roughly at around 90,000 miles.
Regularly serviced etc. but it kept getting rougher. I was advised to swap the injectors - they're nigh on £200 each!!
One guy on a Land Rover forum suggested a £15 bottle of STP diesel injector cleaner; thought it couldn't hurt at that price so got one from Halfords.
Ran a full tank of fuel through it with the cleaner - no more rough running, so it certainly worked on our car.
Regularly serviced etc. but it kept getting rougher. I was advised to swap the injectors - they're nigh on £200 each!!
One guy on a Land Rover forum suggested a £15 bottle of STP diesel injector cleaner; thought it couldn't hurt at that price so got one from Halfords.
Ran a full tank of fuel through it with the cleaner - no more rough running, so it certainly worked on our car.
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