Special COLD-STARTING FUELS for Diesel Engines

Normal petroleum hydrocarbon fuels will permit the starting of the best automotive engines at temperatures not below about 20 F without supplementary starting aids.

Materials blended into normal diesel fuels in optimum concentration to improve cetane number and cold starting may give a reduction in minimum starting temperatures of probably not over 20-25 deg.

Ethyl ether introduced into the air stream of diesel engines (not including crankcase scavenge) will allow starting down to at least -40 F without additional starting aids, but provided the crankcase lubricant and cranking facilities give sufficient cranking speed.