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Castrol SLX Professional has been replaced by Castrol EDGE Professional with improved features. As before, oils for car services have a distinctive mark on the label - Professional. In ordinary stores, these can not be found, however, you can buy, say, for self-replacement from the same dealer.
The EDGE Professional friction pair oil film, according to the company, is stronger and more elastic than the previous one and even 40% stronger than that of its closest competitor. For modern high-powered engines, what you need. The second feature of EDGE Professional is the high purity of the oil. Now it is filtered with greater care than before, and the process is called microfiltration. This eliminates possible scuffing in friction pairs, especially on the crankshaft. Indeed, for the last 2-3 years, the pressure on the oil film in the sliding bearings of the crankshaft has greatly increased in new revving engines.
Finally, the third innovation of EDGE Professional is the brightest. If you illuminate the oil with an ultraviolet flashlight, it will shine. So you can distinguish EDGE from other oils and determine the places of sagging.
