[KKM]

The sales guy probably meant it runs on regular and not premium like the rest of the Lexus line. I buy Costco gas about as cheap as they com in terms of price. Most gas comes from the same refinery and the individual brands then add their own additives.

 

[KKM]

I was just reading my user manual and came across the Research Octane Numer (RON). It recommends a minimum RON of 95. I believe this is equivalent to Octane Rating of 90 in the U.S.
If this is the case would ther be any issues down the track if it's filled up with lower Octane Rating or RON?

In the US, it recommends 87, which is the lowest.