Does E10 affect my engine?

Water and dirt must be kept out of ALL Gasoline products. However, E10 gasoline is more severely affected by dirt and water than the leaded or unleaded gasoline which we have been using for the past 15 years. Ethanol is water soluble and therefore may separate from the blend if excessive moisture is present. Excessive water will reduce the octane of the fuel and may cause engine knock.

Petrojam has taken an additional step in blending E10 gasoline by introducing an anticorrosion agent, thereby, reducing the corrosive effect that gasoline may have on a car’s engine. During normal operation of gas stations there maybe accumulation of condensate water in underground storage, however, this is not considered enough to cause phase separation.

Gas station operators have specific methodologies for testing for water in their tanks. The custody chain for gasoline involves petroleum terminal, tanker drivers and petrol stations. It is necessary for proper stewardship to be exercised at all levels of this chain to prevent water contamination.

Ethanol also acts as a solvent and can mobilize pre existing scales and other fuel deposits in the fuel system. If a vehicle is not properly maintained prior to using E10 the ‘dirt’ in the engine may be flushed into the fuel system. Gas filters (which will accumulate the muck) should be changed prior to using E10 for the first time.

It is a common belief that older cars (pre-1980’s) may have a problem using E10 gasoline and even unleaded (MTBE) fuel. The components of the car which may come into contact with gasoline fuel system (hoses, seals, O-rings, membranes and gaskets), would have already been changed maybe several times in a motor car of this age (25-30yrs).