Lucas high performance synthetic fork oil will improve the performance and extend the life of your forks' internal parts. The special Lucas additive package prevents seal hardening, prevents oxidation and oil thickening, prevents foaming, prevents static friction, and reduces thermal expansion. Lucas fork oil can be used in all fork systems including damping rod, cartridge, bladder, conventional, and inverted forks. Comes in 5WT (#3600-376), 10WT (#3600-377), and 15WT versions; check your owners manual for the correct weight oil for your forks. You should notice that you have better handling and shock behavior giving you more control and a better feel for the road.