Fuel additives ‘more important than ever’

Fuel additives help slow degradation Photo: MarShip

Fuel additives will become increasingly important as diesel currently in storage finds its way into fuel tanks, says MarShip’s director, Peter Weide.

Since the global COVID-19 lockdown, demand for fuel has plummeted. Shutting down a refinery is not straightforward and many are still operating at 65% capacity. As a consequence, billions of barrels of crude oil and diesel are languishing in ships around the world.

“Modern ultra low sulphur diesel does not store well,” explained Peter Weide. “It is widely accepted by all the oil majors that diesel should not be stored longer than six months, after which it degrades very rapidly.”

Unstable product

Amid concerns that sulphur is injurious to health, governments have acted to remove sulphur from diesel. To achieve the ultra low levels of 0.001% the oil must go through many processes, resulting in a highly unstable product prone to sludge formation.

Additives such as MarShip’s DieselAid LDB help slow the degradation but are not routinely added because of cost. “They put additives into the fuel, but only the bare minimum; after all, they make diesel for you to buy, not store,” said Mr Weide.

“So in a few months all these millions of barrels of diesel on the ships will filter through the system and end up on your fuel tanks. Never has there been a greater need for fuel additives than now,” he concluded.

Content extracted from https://www.boatingbusiness.com/news101/superyachts/fuel-additives-more-important-than-ever