Can you use dyed diesel in boats?
Dyed diesel can be used in anything that isn’t on-road. This means it can be used for farming equipment, construction equipment, power generators, aviation and marine vehicles like planes and boats, and even carnival rides that need diesel to operate.
Can I use regular diesel in a marine engine?
Most regular diesel fuel has a cetane rating of 43 to 45, which should be fine for most boat engines.
Can I use car diesel in my boat?
Answer: In principle, a diesel engine is a diesel engine, so an automotive diesel will work fine in a boat. And, in fact, many marine diesel engines are nothing more than “marinized” car or truck engines.