Ask an expert
![johnwti](themes/aaAle/images/interface/profile-pic-placeholder.47cf740a.png)
I bought a second hand Toyota Gaia with D4 engine and Iridium Spark Plugs. What is the required
fuel type ( 91 or 95 Octane) for this engine? The engine plate stated that Iridium Spark Plugs must be used.
Thanks,
John
![jbiddle](themes/aaAle/images/interface/profile-pic-placeholder.47cf740a.png)
The higher the octane the better for this engine.