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Oil Classifications 900

posted by  someone claiming to be ringlee on  Thu Feb 28 01:00 CST 2002 [RELATED]

These are American Petroleum Institute performance grades of oil. The higher the letter, the better the oil: the current standard is SJ, which is better than SH. See the API website for more details about what these mean.

You should have four concerns: API grade (all the oil sold by now should be SJ, with some older stocks of SH still being used up); viscosity (10-30 recommended, 5-30 in winter); the brand of oil (there are differences: Quaker State is reviled); and whether you use dino oil, a synthetic or a synthetic blend. For your car, a good blend would be fine: Mobil makes a fine product. Or synthetic: Mobil 1 is inexpensive and widely available; Amsoil better but a little more expensive.






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