87 octane.
87 is best. Anything more is a waste of money.
91 octane is required on all Harley Davidson's.
86 to 89 OCTANE
regular unleaded - 87 octane
The owners manual should reference that but anecdoatally HECK YEAH. Octane needs are determined by the compression ration and the timing curve of the specific vehicle. Using higher octane fuel than is required by the engine is not harmful to the engine but can be costly if it is not really needed. Using fuel with a lower than required octane rating can be harmful to the engine.
The RX350 requires a minimum octane rating of 91. Only the RX300 and RX330 models can take 87
The octane rating of methanol depends on the octane rating scale measurement type used, n-Heptane is the zero point of the octane rating scale then the octane rating of methanol is 115
Regular unleaded , 87 octane ( according to the Owner Guide )
for any Volkswagen gas engine do not use anything lower than a 91 octane rating.
If your car says it requires gasoline with a specific octane rating ... Well, it will probably operate with a lower octane rating, but it will be very bad for the engine and for your gas mileage. However, you don't need to use an octane rating any higher than your engine specifies, and there's likely no real benefit to doing so.
It has no octane rating.
Bad engine bearing? Piston "slap" Fuel Octane rating too low