My 300CD had a power problem going up hills and I noticed the the old boost line to the banjo bolt had broken off. I replaced it with a new line and the car responded better. When the warm weather came, the in line filter turned blacken and I suspected algae/fungi problem in my tank from sitting over the winter. I again had trouble with power up hills. I replaced the in-line and spin on filter and dumped 5 ounces of Startron Diesel Additive and 3 ounces of Biobor. I know that it is a stronger than recommended shock dosage but both products started that there was no problem with overdosing. The next day the car responded better and every day after. 6 days have past and now the car is having more trouble clogging and stuttering. I suspect the biocides are doing it's thing but how long does this process take to eradicate the gremlins? The in-line filter in clear and has not re-blackened as of yet.

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