This is a guest post about one of the sponsors of the FamousBloggers CommentLuv $3550 CASH PRIZES Blogging Contest by Stephanie Suesan Smith. Stephanie is a Master Gardener who offers gardening advice based on years of experience and extensive course training.
Buying oil is enough to drive you to drink! Not only are there several brands of oil, but there are funny number and letter combination that are supposed to tell you what kind of oil it is.
Why don’t they just use English, instead of 10W-30, SAE5W-30, and all those other things?
The SAE stands for Society of Automotive Engineers. This group developed the initial standards for automobiles in the United States. During World War II, these standards spread around the world.
The number is a measure of viscosity, or the ability to flow. Molasses has a much higher viscosity than water, for example. So the higher the number, the thicker the oil. This thickness is measured at around 100 degrees Celsius, or 210 degrees Fahrenheit. That is the approximate temperature inside a running engine.
Except when it isn’t running. The W in the oil label tells how thick the oil is before the engine is started. The W stands for winter. In the cold, when the engine starts, it is unlubricated until the oil warms and starts flowing. The longer the time that takes, the longer the engine wears at a high rate. Too long, and it burns up.
So a 10W-40, which is a popular grade of oil, runs like a SAE 10 oil when cold, and like a SAE 40 oil when hot. If you just chose a SAE10 oil, that would leave the oil too thin to protect the engine when it was hot. That, also, wears the engine out too fast.
Car manufacturers specify the grade of oil you put in the car in your owner’s manual. Most people these days buy synthetic oil because it wears better than non-synthetic oil. Amsoil was the original synthetic oil, so you can buy Amsoil motor oil if you want the best. You can specify Amsoil motor oil when you have your oil changed, or buy it over the internet from Lube Oil Sales. Go with the original synthetic motor oil, go with Amsoil.
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