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FUEL (BY Curt Morris)Use low sulfur diesel (amber), or red, bought at a marina. It is approx. 38 cetane (flash point for ignition). 45 cetane gives the best engine timing and prevents smoking. ADD Yanmar FPPF 8 Plus cetane improver. 1/4 ounce per gallon. One bottle treats 120 gallons. It raises the cetane level and stops smoking and engine timing problems. ADD Yanmar Biocide Killem (small amount) to treat tank and prevent algae growth. ADD Yanmar FPPF Lubricity 100, 1/8 oz per gallon. A sulfur additive to stabilize fuel and lubricate. ADD Yanmar Diesel Fuel Treatment if 45 degrees F or less to keep diesel fuel fluid. Comments, please!