What do you mean by "...then I drive and discover that I don't." How are you making that determination? If you've checked the oil level by the dipstick while the car is sitting level, then the reading is accurate. Are you looking at the oil pressure guage on the dash? If that's how you're reassessing your oil level, then you have one of two problems-- a faulty oil sending unit, or worn main bearings.
I'm sorry, but "accurate astrological readings" do not exists.
To Get Accurate Readings Of Temperature
To discover how a piece of writing achieves its effects
For more accurate readings of measurement.
to obtain more accurate readings
The best place to look for blood pressure readings is at your local doctors office or at a public health office. Both will provide you with accurate readings.
Varies due to ambient temperature - need a chart for accurate readings
the answer is yes
Many psychics advertise that they do accurate readings over the phone. If you believe in that type of thing there is no reason a phone psychic should be any less accurate than an in-person psychic.
It needs to be calibrated every year to be sure it is accurate
It's possible to get really good info from a free horoscope. Check out daily readings in your local newspaper. The should be considered just as valid as paid readings.
In order for experiment results to be trusted, they must be both precise and accurate. Successive instrument readings help guarantee both of these.