What's the lexus rx350 brake fluid type?

In all model years, the Lexus RX350 recommends the use of DOT 3 brake fluid, but it is also capable of accepting DOT 4. The two types serve the same applications, with the sole differences being boiling point and price point. The higher boiling point of DOT 4 is not beSTServed in the RX350, since You'll likely never take advantage of it. To that end, You won't necessarily experience any pitfalls if You're choosing to use the "premium" fluid, but You also won't gain any benefits. It's not recommended that You mix the two brake fluid types, so You're infinitely better off juSTSticking with DOT 3. However, if You do happen to be an heir to a DOT 4 fortune, You can always drain Your system of DOT 3 and replace it; it works just as well.