As a first step to study the low temperature flow properties of some residual fuels and to investigate the measurement of the efficacy by flow impro-vers, a comparative test was conducted with two methods of the CFPP and the JIS.
From some experimental results, the following conclusions were obtained.
(1) It is possible to estimate the CEPP as a testing method for gas oil and diesel oil mixed with flow improvers.
(2) In order to establish the CEPP as a formal testing method, many very strict restrictions must be obeyed for the accuracy of the measurement and some factors that affect to the low temperature flow properties of fuels.
(3) As the flow improvers have the optimum mixing weight for improving the low temperature flow properties respectively, in case of comparing the efficacies by them, it mustikbe considered that.
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