This report covers the first year of a multi-year program to study the effects of nitrogen compounds on the storage stability of synthetic fuels derived from oil-shale and coal. A variety of organic nitrogen compounds were evaluated for their tendencies to promote sediment in hydro-carbon fuels under accelerated storage conditions. Three types of diluents were employed which represented fuels of increasing complexity. These were pure n-decane, petroleum derived JP-8 and No. 2 diesel fuel. The fuels and fuel mixtures were stored at 110°F (43.3°C) and 150°F (65.5°C) in the dark. Sediment formation was determined gravimetrically.