Thanks for the replys. I pulled the injectors myself probably less than 1000hrs. ago and had them rebuilt (cleaned and pop-off presures set).
I have also replaced the fuel tanks and Racor 900 since then. The thing is that with noncomercial use the injectors were done approx. 8 years ago.
I drive an old mercedes 240d with 300,000 miles on it and use this product
every couple of years. It has a 67hp 4cyl.natural diesel. I was just curious if any of you guys were using injector cleaning products as part of routine