Our customers

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"I recently called  Diamond Diesel when our Hatteras was having what we thought was an injector issue. They came to look at the boat and with a scope and sample were able to see algae plugging my lines.  They were able to quickly clear the block and polish my fuel till it was bright and clean again and saved me from a very costly repair I did not need. They truly care about their customers and went out of their way to save me money when they could have easily said I needed polishing on my second tank. They are true experts in their industry and very professional. I highly recommend Diamond Diesel for your fuel polishing and testing needs. "

~Crew of the Mad Hatter~

"We have been using Diamond Diesel for years now. They service both my standby generator at my warehouse as well as my yacht. There is no way to calculate the peace of mind they bring me, Tom has helped solve so many potential issues over the years and I sometimes wonder if he invented fuel from his level of knowledge of fuel systems, and now with Scott's mechanical skills and decades of experience building generators and captaining yachts I can say they are firmly at the pinnacle of the diesel maintenance game."

~Terry and Samantha Payne~

"I have used Diamond Diesel for my polishing needs for the past two years. They were referred to me by another company in my industry and I could not be more pleased. They are punctual,  professional, knowledgeable, and organized. I no longer worry about my standby power, they come by quarterly and test,  add stabilizer and a biocide and polish if needed.  I get sample reports, written  field reports, as well as a list of things they have their eye on which is incredibly helpful for my next years budgeting."

~Chris, Bluewater Consulting~

While we have be descaling engines for over a decade now,  we have officially launched it as a separate division. So by popular demand Diamond Descaling is open for business descaling engines as well as your AC'S. We will be posting some nice launch discounts and specials in the weeks to come. We look forward to serving your descaling needs.