Between 70 mg/dl (3.9 mmol/L) and 92 mg/dl (5.0 mmol/L) . This is the finding of a considerable body of research. People whose blood sugar tests at this level do not develop diabetes over the next decade or longer.Those with supposedly normal blood sugars above 92 mg/dl often do.etween 70 mg/dl (3.9 mmol/L) and 92 mg/dl (5.0 mmol/L) . This is the finding of a considerable body of research. People whose blood sugar tests at this level do not develop diabetes over the next decade or longer.
The owners manual on every vehicle should state how often the manufacturer recommends that you tune up cars, but as a general rule it is every two years or 30,000 miles, whichever comes first. Driving under extreme temperature and weather conditions will make parts wear out faster, however.
As you can see, a regular tune up is important to your car's performance. The process should involve replacing the air filter, replacing or cleaning the spark plugs, and replacing the distributor cap and rotor. It can also include replacement of the spark plug wires, fuel filter, PCV valve, and oxygen sensor.