St. Charles, Missouri
1555 Centre Pointe Ct.
Saint Peters, MO 63376

How to Choose the Right Motor Oil for Your Car March 28, 2017

St. Charles, St. Charles
How to Choose the Right Motor Oil for Your Car, St. Charles, Missouri

To keep your vehicle running smoothly for as long as possible, it is crucial that you schedule regular oil changes to lubricate the engine and prevent moving parts from overheating. Frecks & Sons’ Automotive, the premier auto repair shop in Saint Peters, MO, explains below how to choose the right motor oil for your car or truck. Known throughout Missouri for the quality and reliability of their service, they specialize in brake repair, engine repair, oil changes, and more.

Oil changeWhat Is Viscosity?

The viscosity of engine oil is a measure of its resistance to flow. Motor oil labels describe viscosity using a cold temperature number and a hot temperature number, usually shown like this: "10W-40." The higher the numbers, the thicker (more viscous) the oil is. The first number measures viscosity at 0º F, while the second measures viscosity at 212º F, which is the approximate temperature of a running engine.

How to Choose a Viscosity

Oil needs to be more viscous at higher temperatures to minimize leakage and protect moving parts, so 10W-40 is a good oil change selection for high performance use in hot climates that rarely see freezing temperatures. On the other hand, oil should be less viscous during winter temps so the engine can turn over easily and oil can flow to all moving parts. Thus, a low winter number like 5W-30 is a good choice for cold weather areas that don't see prolonged hot spells.

Choosing Between Conventional & Synthetic Oil

Conventional oil is inexpensive and effective. However, synthetic oils are specifically designed to provide exceptional, long-lasting performance. They flow better when cold and offer top lubrication when hot, but they cost considerably more than conventional oil does. If you are concerned with costs, choose conventional oil; if car care is your focus, synthetic oils are your best bet.

Frecks & Sons’ Automotive, the most respected auto repair shop in Saint Peters, MO, offers timely repairs and superior service. Visit their website for contact details, or call (636) 928-5326 to speak to a friendly oil change specialist.

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