Yanmar and Biocide

[DeepFrz]

Originally Posted by Vasco

Just started using Startron. Those that use it swear by it. Never use to use anything but my fuel line got plugged with black goop last year while crossing the Gulf Stream.

Vasco;
Have you cleaned your tank since? If so, what did you find in it?

Had a very similar experience just off the western tip of Cuba. Not a fun experience to work on a fuel problem in a seaway.

[Ziggy]

Originally Posted by Liam Wald

Been using Bio-Bor since new. Following directions I have only used 1/2 of a bottle in 750 engine hours. I had been told that if you use too much BIO-BOR it turns to jelly in the bottom of the tank. I also started using STARTRON a while back to clean injectors. I don't know if it works but it doesn't cost much and has no limited use recomendations. Fuel is sparkling clean. I change filters every 100 hours max and they are as clean as new when I change them. Yanmar 3GM30F.

I'm not positive, but I think that (unlike most other biocides) FPPF Killem is water, not diesel, soluble. If the water separator in the fuel filter functions correctly, Killem should never get into the motor.