I have been told that if I add petrol to the tank of my diesel engine it will reduce the exhaust emissions for test purposes. Is this true and if so how much petrol would I need to add. If not is there such an additive that would achieve the same result.
Would adding petrol or some other additive give me better power or economy by cleaning the engine?
Hugh
Flashlube Diesel Conditioner works for me - it certainly reduces visible smoke output and seems to improve economy (they claim up to 6.5%, I see about half that improvement).
In message , Hugh Hogan writes
I use "forte" fuel treatment. Yesterday I had a little use 300 tdi disco fail its emissions test with an off the scale 9.9
I put half the pot of additive in the fuel filter and the rest in the tank.
After a 10 mile drive it was re-tested and passed with a reading of 0.89 !!!
On or around Wed, 25 Oct 2006 10:31:41 +0100, Marc Draper enlightened us thusly:
Mind you, you can get similar improvement by thrashing it hard for a couple of miles, generally. Mind, the MOT garage I go to has a nice 2-mile-odd hill close by which is ideal for thrashing vehicles up.
It is 7 miles to my MOT station so they get a good enough "thrashing" on the way there to make sure they are clear..
I put two gallons in the wife's Rover for the MOT when it had about a quarter of a tank of diesel. The pump is set high for performance and it's a tricky adjustment so the petrol works just fine, but that's a bit much. It loses power and is difficult to start after, so I always fill it up to the brim asap with diesel - then it's OK again. Some say the petrol is not good for the engine and seals and stuff, but this car is now 11 years old with 218,000 on the clock so I can't see that it's a really bad thing! TonyB
It's not good for the injector pump - it reduces the lubricity of the diesel and increases wear on the pump.
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