Yukon Ultimate XLI Premix is a long lasting coolant because it contains efficient organic acid inhibitors which guarantee long-term cooling system suitable for all kinds of operations. Plus you don’t need to add any other additives. Yukon Ultimate XLI Premix is stable at high temperature and will form a protective film at the molecular level without affecting the cooling system.

Laboratory tests show that metal surface protected by a regular coolant with silicate will lose its cooling ability after some time. With Yukon Ultimate XL I Premix, however, the cooling system will remain as effective as it is when you start using the product and will provide protection against corrosion by forming a layer over all surface and allow for a better heat transfer.

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