Accordingly, the Club proposes to all interest parties to follow the recommendations below:

#1 Concern risk

There are concerns about the risks associated with the following five properties because compatible oils are manufactured in various ways.

(1) Mixing stability (2) Low temperature fluidity (   3) Low kinematic viscosity (   4) Cat-Fine ( AL + Si ) ( 5) Ignition / combustibility

Specifically, the first two options, mixing stability and cold fluidity have a direct adverse effect on engine operation in the case of excessive sludge and wax crystallization. There is concern about the inability to operate the cleaner due to accumulation in the rotating body.

#2 Measures

  • Mixing stability → Sludge countermeasures

The Club highlights: Do not mix in storage tanks or piping, or keep the mixing ratio as low as possible.

Yet, if the situation is unstable, use sludge dispersant. Also, the strainers can be often cleaned.

The oil purifier decreases the amount of oil flow, shortens the sludge discharge interval, raises the oil passage temperature, and shortens the opening interval of the rotating body.

The Club recommends that in case of a problem, install  a spare sludge dispersant on the vessel.

  • Low temperature fluidity → measures against wax crystallization

The most crucial part is: Pour point (temperature) Maintain above + 10 ° C and heat.

Under the possibility that there is no heating device and  the seawater temperature, piping ambient temperature, engine room temperature, and air temperature that affect fuel management cannot be raised to the pour point (temperature) + 10 ° C or higher, an additive that suppresses wax crystallization can be added.