Forum Discussion
LarryJM
Mar 07, 2018Explorer II
fj12ryder wrote:
A one-time analysis won't tell you too much unless there are real problem areas, like antifreeze in the oil due to a leaking head gasket, or oil dilution due to excessive fuel in the oil. The best way to use them is as you would any diagnostic test: watch them over time and see how they change. I saw my numbers change when I went from Delvac 1300 to Rotella TTT and then back to Delvac 1300. It helped me decide to stick with Delvac 1300.
Exactly true OA is all about trend analysis. It will give you a heads up on air filtration issues and impending failures in things like turbos, etc. I did them every oil change on my Van until around 60K miles and now about every third oil change. IMO for a diesel it's a great data base during a sale showing how one has watched over things with documented data. Over the last 17 years I've done close to 20 and even at $30 that's not much expense in the overall scheme of things.
Larry
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