Independent testing on outboard engines was conducted at Orbital’s WA laboratory in 2010 to determine whether running new and improved Opal fuel had any detrimental effect on the engine.
After running new and improved Opal fuel for five hours per day over three consecutive days, there was no significant change seen in the condition of the inlet ports, valves, fuel injectors or spark plugs nor a significant reduction in flow rate which would indicate fouling.
To ensure the results for new and improved Opal fuel were replicable in the field, Opal fuel was also tested outside the laboratory.
Field Testing was undertaken on an Evinrude 115HP E-TEC outboard engine. This testing evaluated the engine’s performance and smoke output when in idle, mid power and with the throttle wide open.
Throughout the testing the engine did not experience hard-starting or rough running when using new and improved Opal fuel. The engine stability at the 2200rpm-2500rpm mode of operation appeared to improve whilst using new and improved Opal fuel.
For further information on the testing of Opal fuel please download the fact sheet.