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Oil Condition Monitoring

Archive for August 2008

Is Re-refined Oil as Good as the Original?

August 20, 2008

The answer is “Yes”. Lubricating oil doesn’t wear out, but it does get dirty and loses its protective additives. Once contaminants are removed and a fresh additive package is added, it takes on a new life. Test after test has proved there is no difference in quality between re-refined oil and virgin oil. Re-refined oil products are subjected […]

What goes around comes around, and other interesting news

August 14, 2008

There have been a couple of interesting articles in the local and/or national news in the last few days. I thought these were worth sharing: First is an article from a local Southern California paper, the Orange County Register. Turns out the Orange County Sanitation District, in conjunction with the University California Irvine’s National Fuel Cell […]

Comparing Oil Condition to Determine Optimal Oil Change Interval

August 7, 2008

As promised, here is some additional oil condition/oil change interval information on the PT Cruiser discussed in August 6th’s posting. This chart displays the same information, but the curves are shown in a side-by-side comparison instead of the cumulative curve on the previous chart. What you see is that the oil additives depleted at approximately 450 miles for both […]

When do additives deplete? Much sooner than you’d expect.

August 6, 2008

One of the key factors in determining the condition of oil is the amount of additives, or lack thereof. As defined by NORIA, additives are a chemical substance added to a petroleum product to impart or improve certain properties. Common additives include antifoam agents, anti-wear additives, corrosion and rust inhibitors, detergents, and oxidation inhibitors, among others.  The oil condition curve pictured above is from […]