See also:

Checking tire pressure manually
To determine and set the correct tire pressure, proceed as follows:   Remove the valve cap of the tire that is to be checked.   Press the tire pressure gauge securely onto the valve. ...

Tread wear
The tread wear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified U.S. Government test course. For example, a tire graded 1 ...

Adding engine oil
WARNING If engine oil comes into contact with hot engine parts, it may ignite and you could burn yourself. Do not spill any engine oil on hot engine parts. Environmental note When adding ...