    Leonard Stern posted that "And that is why I always use a water absorbent in treating the fuel as well as biobor for the enzymes. Fairly inexpensive insurance considering the age of our tanks (40 years)." I asked him off line what he used for water absorbing and he was kind enough to respond with this: "I purchase this product from Canadian Tire. The label states "water absorber for diesel engines and fuel". I am not sure of the actual composition. I use a litre per tank (1 litre for 500 gals) even though I may not have a full tank." We have 4300 hours on our twin Lehman 135s. I have always used Biobor but have not used a water absorbing product. Is there a product available in the US that listees recommend we should be using? <<<Gary Ritzman>>> M/V Dharma (But on the VHF I say "this is the trawler Dharma" not the "Motor Vessel Dharma") 1991 Albin 40 Mercer Island WA