Toyota Prius Warranty & Service Handbook page 19

What about using fuel containing Ethanol?
Toyota approves the use of petrol with an Ethanol content up to
the limit of 10%.
Toyota warranty will not cover failures or faults due to operation on
fuels with an Ethanol content greater than 10%.
What about using biodiesel fuels?
Toyota will endorse biodiesel fuel blends using FAME (Fatty Acid
Methyl Esters that comply with either EN14214 or ASTM D6751
standards) of up to 5% volume concentration when mixed with
conventional diesel fuel. The final product B5 (5% Biodiesel blend)
at the pump must conform to the national Diesel Fuel Standard
which is based on EN590.
Toyota warranty will not cover failures or faults due to operation on
biodiesel fuels greater than a 5% (B5) blend.
HELPFUL QUESTIONS AND ANSWERS
Can my Prius be converted to run on LPG?
Liquefied Petroleum Gas (LPG) conversion is not recommended for
Prius models.
Should I use fluid additives like coolants and fuel
enhancers?
Your Prius is engineered to perform at its best with Toyota
Genuine Fluids and Lubricants. Further additives are not
necessary.
If I have an accident can my insurance company insist on
the repairer I use?
In the event that you are involved in an accident and your Prius
needs repairs, you can write to your insurance assessor insisting
that only new Toyota Genuine Parts and Panels be used on your
vehicle.
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