| 摘要 |
The present invention relates to a method for evaluating the degree of dilution of the lubricating oil for an internal-combustion engine operating with a fuel containing at least partly at least one biofuel, in which method the radioactivity of an oil specimen is measured so as subsequently to determine the degree of dilution of the oil by the fuel. According to the invention, this method consists in measuring the radioactivity of at least one of the constituents of the biofuel contained in the oil specimen. |
