Be very careful about applying anything like de-ice fluid, oil, fuel etc to your tie down ropes. It will rot them.
I rented an aircraft in Africa and the owner supplied his tie-down kit which was not well looked after. Ropes chucked in the back of aircraft with leaking oil cans etc. Well, after I tied the aircraft down for an approaching thunderstorm, both ropes snapped in winds that the tower recorded as around 75kts.
The aircraft was of course flipped upside down and written off.