The manufacturers of the said tank additive all state it should not be added more than every 3,000 miles approx.
my brother had warned me that the forte is quite corrosive and can knacker engine parts if used continuously but he reckoned there was nothing better if you needed a quick internal clean out. an !Removed! for you car
i only used the high concentration for a 20 mile run, then after that it was back to the diluted rate as per the instructions.
i wouldnt want to be running with this sort of additive in the fuel as a normal thing, it was just to try and ensure any crap deposited from burning the recycled gases was cleaned out, and it 'd been ages since the oil and filters had been changed so things were probably as bad as could be.
my brother had an egr problem with his saab. he recognised the issue, and didnt even open it up to clean it. he just ran some forte through and it sorted it out
Firstly the Forte/wynns and other fuel additives that state "clean the induction system" really do, they do this by modifying the fuel flash point of the fuel i.e. making the fuel burn at a quicker and much higher temperature, this then burns carbon deposits away where they would not normally at normal diesel fuel running temperatures.
The instructions of use should be followed as they are devised in the laboratory on a dilution ratio e.g. 25% parts modifier to 100 parts fuel, you seem to have modified the laboratories stated dilution ratio by 75% positive etc,probably wont do your engine much good in the long run if practiced often>?
i do agree with what you have said with regard to the inclusion levels of the diesel additives. i only used a concentrated level to help clean out the fuel combustion system and egr as a short term option. the following day i topped up the fuel tank and so diluted the additive to the normal sort of inclusion levels.
a few days later, and after short journeys that didnt allow the car to get to full temperature i found the glow plug light/limp mode returning. i ordered a solid egr blanking plate and then took the car for a decent run. the car ran great, and the forte must have been clearing out any residue rubbish. the following day i fitted the egr blanking plate [the solid one] and it was nice and easy to just slacken off two bolts and slide it into place. the car is driving great, excellent mpg and power, and no glow plug light or EML coming on.
1.4tdci defiantly not underpowered, a cracking nippy drive. excels between 40 and 70, but will just top a ton. the low profiles hug the road really well but can be a little firm over pot holes and speed bumps [tyres and suspension].
the injectors can have a poor seal. this can be observed with a smell of diesel coming into the cabin, and a dry glue look over the injector seats. its dried out diesel residue. it is an easy fix at a diesel specialist, cost me £150 to get the wifes car sorted.