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, but I realize it's getting old, and I've got a hankering for a new truck, but I hate to spend money :).Would it be worthwhile to send in an oil sample to Blackstone to see what they can find out?? Will they be able to tell about wear on rings etc and be able to tell how much life it has left in it?The truck is to the point that if I had to replace/rebuild an engine or tranny, I think I'd just sell/scrap it instead of repair. Thanks for any feedback!

Personal choice and up to what you need/want out of the testKnow my vehicles very well and don't wish to spend that $28 bucks (last time checked) on a test and just apply it to synthetic oil and best filterNow, do consider it every once in a while for older vehicles to look see how it is doing...but haven't done that on my Suburban (+168K HARD miles). Did on my old K5 and it showed no appreciable issuesDitto hate spending money and keep my vehicles a looooong time and what they can tell on wear n tear is not as good, IMHO, as a compression test...historical listing of my dash engine oil PSI, etcCurrent Suburban 7.4L at 168K miles...dash oil PSI gauge says 75PSI on freeway, fully warmed up. Back a few years ago it was over 80PSI warmed highway (1,000 RPMs and up) and pegged when cold. Idle was 45PSI warm and 50 or so PSI cold...now down to 40PSI warmed and 45PSI cold. Synthetic (Mobil) 15-30 and even 0-30 but don't like any zero viscosity for my vehiclesJust my opinion on this matter

Lots of nice items on new trucks since 2002.

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.

I tested twice after initial break-in (10k) it helped form a better air filter change schedule. I was picking up too much silicone. reduced the filter to 15k and the problem wen't away. it's a good deal every 15-25k miles but honestly, when was the last time a modern engine blew-up?

I've never run them on any gasser motor. Probably would not be something I would do.I have run quite a few of them on the diesel, but I don't do it routinely. When I am comparing oils that I want to run, particularly synthetic versus traditional, or AR9100 additive versus without, or combinations of those, the tests are the only way to know the difference. And now and then it is good to know about fuel dilution, again, really only a diesel thing.

Blackstone Oil Analysis worthwhile?? | Good Sam Community

22 Replies

Lwiddis
Explorer II
Mar 07, 2018
Lots of nice items on new trucks since 2002.
BenK
Explorer
Mar 07, 2018
Personal choice and up to what you need/want out of the test

Know my vehicles very well and don't wish to spend that $28 bucks (last time checked) on a test and just apply it to synthetic oil and best filter

Now, do consider it every once in a while for older vehicles to look see how it is doing...but haven't done that on my Suburban (+168K HARD miles). Did on my old K5 and it showed no appreciable issues

Ditto hate spending money and keep my vehicles a looooong time and what they can tell on wear n tear is not as good, IMHO, as a compression test...historical listing of my dash engine oil PSI, etc

Current Suburban 7.4L at 168K miles...dash oil PSI gauge says 75PSI on freeway, fully warmed up. Back a few years ago it was over 80PSI warmed highway (1,000 RPMs and up) and pegged when cold. Idle was 45PSI warm and 50 or so PSI cold...now down to 40PSI warmed and 45PSI cold. Synthetic (Mobil) 15-30 and even 0-30 but don't like any zero viscosity for my vehicles

Just my opinion on this matter

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Blackstone Oil Analysis worthwhile??

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