Speaking of oil analysis FTIR Spectometer is one of the most used laboratory tools allowing to make fourier transform infrared spectrometry.The process implies the exposition of a lubricant film to infra-red radiations veriying absorption and transitions between vibrational energy levels. With reference to new oils and to raw materials this is an essential check to grant the correctness of the chemical composition. With reference to used oils instead, the analysis results are confronted with a dataset to get useful information about the level of the following parameters in the oil: water, glycol, fuel contamination, nitration, oxidation, sulfonation, soot loading and anti-wear additive depletion.