Juliet 15
Senior Member
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?
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.
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
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.
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.
Blackstone, fast, complete, detailed and simple at less than $30.