Blackstone Oil Analysis worthwhile??
The "how many miles on your tow vehicle" thread prompted this. I'm in the same boat as the OP of that thread, I've got 215,000 miles on a 2002 1500HD with the 6.0l gasser. It's been a great truck, b...
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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.
