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03-05-2014, 01:08 PM | #23 |
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03-05-2014, 01:16 PM | #24 | |
Stop the hate, get a V8
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The acids attack pretty much everything. Namely, it causes corrosion that cannot be "burnt off" later on. The areas most prone to it are the valve train and cams. For reference, when I changed my TWS after 7754 miles, the TBN came back at 3.4 and TAN at 3.4. When TAN = TBN that means you've effectively got a "neutral" oil. The conclusion I can draw is that for my specific engine and driving style, TWS is good for about an 8k change interval. A person who has more highway driving and/or a warmer climate might be able to go longer. The only way to tell is to get it analyzed and look at the TAN/TBN relationship. If the TAN > TBN, you probably should've changed it a bit sooner. If TAN < TBN, you can probably leave it in there longer. Getting TBN alone is not that useful.
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03-05-2014, 02:55 PM | #26 | |
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