John F.

As a longtime customer of your engine oil reports, I really appreciate your work. I especially appreciate your Comments section where you take a moment to review and comment on the report specifics. The light humor is the cherry on top.
Please keep up your great service and the personalized touch!
By |2026-06-30T13:19:34-04:00June 30, 2026|Testimonials|Comments Off on John F.

Mark S.

I’ve known for 20 years (both in my personal use and in my work) that your lab work/analyses and reports are top notch. But even your website continues to be one of the absolute best customer interfaces I’ve used. (I also enjoy the newsletters and FB posts when I have the time to read them.)
I was wondering about the status of the initial sample I sent for my wife’s 2026 Honda Odyssey V6.  Quick trip to the website, and all the tools I needed to confirm that you received it and that it hasn’t yet been reported (fair enough) were there.  Anxiety of USPS losing my sample now vaporized.  Past experience tells me I will be getting a thorough report in due time.
Mr. Jim must be proud of how you guys have maintained Blackstone’s leadership. In an age where customer feedback only happens when it’s negative, I just wanted to provide a virtual pat on the back.
By |2026-06-16T14:35:34-04:00June 16, 2026|Testimonials|Comments Off on Mark S.

John A.

I appreciate your response, you guys are superior to AOA as I’ve used both recently. Your custom touch and response sets you apart and I tell all my buddies at the hangars the same. Keep it up!

By |2026-06-16T14:32:55-04:00June 16, 2026|Testimonials|Comments Off on John A.

Steve B.

Hey, thanks you guys. Not kidding y’all are the best!
I can’t afford right now to get a new car and based on what you tell me I don’t have to.  The piece of mind that you provide me with means a lot. Thank you!
By |2026-06-16T14:31:46-04:00June 16, 2026|Testimonials|Comments Off on Steve B.

Jennifer W.

I just wanted to take the opportunity to thank you guys for what you do. You are very good with the podcast. I love it and have been binge listening since I found you. Have a great day and my hubby said he DID taste oil before… typical shadetree mechanic I guess. 😊

By |2026-06-16T14:30:40-04:00June 16, 2026|Testimonials|Comments Off on Jennifer W.

Jay G.

My mechanic filled a sample, but the outer shipping package disappeared. Your customer service agent on the phone was great, a real human!!! Had my info based on my phone number and what I needed on the way without me even giving my address. In a day of less and less, y’all give more. Thanks for that!

By |2025-08-01T08:43:33-04:00August 1, 2025|Testimonials|Comments Off on Jay G.

Aaron P.

I want to say thanks so much for the diligent digging and helpful analysis from this series. This has likely saved me an epic, expensive failure at a race weekend! I have kicked off a rebuild for my spare engine and hopefully will have that resolved before this becomes a real issue. Many thanks, keep up the amazing work.

By |2025-07-17T15:29:15-04:00July 17, 2025|Testimonials|Comments Off on Aaron P.

Clay B.

I just want you all to know how much I enjoy receiving your reports. They are personal and worded in a way that helps me understand what’s going on with my car. Thank you for that and you all should be very proud of the business you have created.

By |2025-05-16T15:53:44-04:00May 16, 2025|Testimonials|Comments Off on Clay B.

Ope O.

You guys were spot on! My Corvette’s engine was just replaced with “cracked piston” as the reason. Reason? They don’t know, i image it can be hard to diagnose but they claim metallurgy.

By |2025-05-06T11:28:33-04:00May 6, 2025|Testimonials|Comments Off on Ope O.

Casper Air Service

Blackstone Labs is our trusted partner in maintaining our customers’ engines in top condition, identifying trends before they become problems, and helping us deliver service for our customers’ aircraft to remain SAFE, AIRWORTHY, LEGAL, and RIGHT!

By |2025-03-19T10:16:30-04:00March 19, 2025|Testimonials|Comments Off on Casper Air Service
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