Synthetic oils, unlike the mineral have a maximum thermal and chemical stability. Chemical stability means that the work of synthetic oils in the engine with them does not occur any chemical transformations (oxidation, parafinizatsii, etc.), which could affect its performance. … Continue reading →

Brad Parkinson believes that the development is out of date, and the characteristics of these satellites do not meet the latest requirements. That is, it may happen that Russian consumers who have made bid solely on GPS, in the near … Continue reading →