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Old 11-16-2020, 10:15 PM   #1
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Where Do You Get Your Oil Samples Analyzed?

Who do you have analyze your oil samples? Do they analyze samples regardless of the motor make? I have DD 4-71s and Onan generators. Do places only do, say, Detroit motors, and others only analyze Cummins, etc?
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Old 11-16-2020, 10:44 PM   #2
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Blackstone gets a lot of good recommendations.
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Old 11-16-2020, 10:48 PM   #3
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I have been using Blackstone. They do all 3 brands of motors installed in the boat, and the transmission, and my car.
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Old 11-16-2020, 10:52 PM   #4
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Juliet, I'm also in Bellingham. Stop by Tri County Diesel on Roeder Ave. For $25/engine, they will give you a sample bottle for your oil, send it off to a lab, and give you a written report telling you if you are in-spec. Ask for service manager Jim Rick with questions. All engine makes can be so analyzed.
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Old 11-16-2020, 10:56 PM   #5
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I'm a fan of Blackstone. They send all needed bottles, mail packaging as part of their service. Sample report(s) is thorough as well. I've been using them for 7 years. If there is a question you have, they respond quickly.

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Old 11-16-2020, 10:56 PM   #6
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Another Blackstone vote.
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Old 11-16-2020, 11:04 PM   #7
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Old 11-16-2020, 11:36 PM   #8
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Blackstone for me.
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Old 11-17-2020, 12:12 AM   #9
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ALS labs. I still have one sample kit I will use up and then I may transfer to Blackstone. Many seem to be happy with them. Maybe ill pull 2 samples and send one to Blackstone and one to ALS.
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Old 11-17-2020, 01:00 AM   #10
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Old 11-17-2020, 01:11 AM   #11
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Sounds like Blackstone is the favorite.

I'll stop in a Tri-county also. I was there a while back but they don't do Detroit's, so I haven't thought about them for a while.

Appreciate the input as always.
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Old 11-17-2020, 08:17 AM   #12
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I have used and been a fan of JG Lubrication Services.
Reports are similar to Blackstone and I have found them very willing to answer questions.
https://jglubricantservices.com/
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Old 11-17-2020, 10:39 AM   #13
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Quote:
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Sounds like Blackstone is the favorite.

I'll stop in a Tri-county also. I was there a while back but they don't do Detroit's, so I haven't thought about them for a while.
Survey, Service, Oil Analysis. These are three different things, and can be mutually exclusive. Typically any diesel shop can survey an engine even if they're not certified to service it. Though technically I hire a engine surveyor that IS certified for the engine I'm having surveyed.

The diesel shop does not typically do the oil analysis. They send it out to a lab. At that point ANY shop can act as the middleman for oil analysis. The lab doesn't typically care what the make/model of the engine is.

Service, that you obviously want to have a shop certified for that make of engine.

So, no need to find a DD shop to send the oil out to a lab. IMHO
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Old 11-19-2020, 10:09 PM   #14
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Blackstone here too. You can request sample bottles for free. Been using them for 6 years, one a year for engines, gunny and trannies. Recommend them highly.
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Old 11-20-2020, 07:48 AM   #15
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The diesel shop does not typically do the oil analysis. They send it out to a lab. At that point ANY shop can act as the middleman for oil analysis. The lab doesn't typically care what the make/model of the engine is.

So, no need to find a DD shop to send the oil out to a lab. IMHO
The only downside I found using a shop as the middle man (at least in my case) was the shop has the account with the lab. I got the report but couldn't go into the reporting to combine / link future tests to get trend line graphs, etc.
When I went direct I was able to contact the lab and get the shops samples moved to my account and I had it all under my control.
I have since added a motorhome engine and starting to do coolant samples on boat & MH so nice to have everything under my account & control.
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Old 11-20-2020, 08:01 AM   #16
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Blackstone... but cautiously.


Oil analysis isn't all that it's cracked up to be and I've seen some mistakes. It works best over time when you see trends and if you get a crazy reading, it could be just that.


I've had a few crazy readings over the years and won't do anything major right away. (Once I pulled and replaced three cylinders on an aircraft engine because of a false reading from Blackstone). So, I get other info, like temps, exhaust color, etc.


I've been using Blackstone for several years, but prior, used a smaller but more accurate guy in OK who retired.
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Old 11-20-2020, 09:36 AM   #17
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I’ve been using Blackstone for 20 years and have been very happy.

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Old 11-20-2020, 09:38 AM   #18
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Old 11-20-2020, 09:55 PM   #19
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Blackstone also. One thing to note is use the same lab . The format and baselines differ so getting previous test for comparison is why we test in the first place.
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Old 11-21-2020, 12:12 PM   #20
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Blackstone also. One thing to note is use the same lab . The format and baselines differ so getting previous test for comparison is why we test in the first place.
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