In 2023, 1200km Paris-Brest-Paris, “I used Dumonde Tech chain lube, which kept the chain silent during the long ride without the need to reapply lube”.

After racing the 2023 Unbound XL Jan wrote: “At the finish, bikes were covered in mud, but our chains were still turning happily and quietly. They hadn’t even worn measurably during the 25-hour ordeal. We agree with Lael who recommended Dumonde Tech chain lube: “The only stuff that works.”