See also:

Brake fluid
WARNING Over a period of time, the brake fluid absorbs moisture from the air; this lowers its boiling point. If the boiling point of the brake fluid is too low, vapor pockets may form in the ...

TWR (Tongue Weight Rating)
The TWR specifies the maximum permissible weight that the ball coupling of the trailer tow hitch can support. ...

Brake fluid level
If you notice that the brake fluid level in the brake fluid reservoir has fallen to the MIN mark or less, check the brake system immediately for leaks. Also check the thickness of the brake l ...