Hi,
I have an 83 Diesel 300D. I don't drive it that far, that much. Want to keep it up. Should I change the fuel filter when it looks black?...or change in terms of miles. Also, just another question....should I use a "diesel fuel Biocide" every so often to keep the tank clean?
I had bought BioKleen by Power Service in the past, now I lost my job, and wondering if it's important to get this....
Thanks
Lindajane