Testing Oil

[Paulguy100]

Is Blackstone the best?

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[BstingGray]

I've used them for my Cummins oil but haven't used them for any of my gas engines. I don't know if they're the best, but they worked good for me.

 

[GATORB8]

There are some that do some additional testing, but I always liked black stone. Easy and they keep track of your results. You can tell they actually review and comment back base on your engine.

 

[GtX]

+1 Blackstone

 

[Tortolabob]

Blackstone does a good job on diesel, gas and gas airplane engines

 

[DewHawk]

They're all I use to track my M3's trends. That car's never had the rod bearings done in 20 years and nearly 49000 miles, so I'm watching the copper count like a hawk.

 

[rarefied.air]

I've used them for all of my analyses and have been quite satisfied. Review & comparison to similar population of engine averages is nice. Plus, they make it simple with the prepaid envelopes + sample bottle. They do list their ASTM methods here.

An alternative would be Horizon/Polaris Laboratories, which I believe is what the Amsoil test kits use.

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