Lexus LFA Owner's Manual page 262

4-3. Do-it-yourself maintenance
Engine coolant
The coolant level is satisfactory if it is between the "FULL" and "LOW"
lines on the reservoir when the engine is cold.
Coolant selection
■
Only use "Toyota Super Long Life Coolant" or a similar high quality ethylene glycol
based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life
hybrid organic acid technology.
"Toyota Super Long Life Coolant" is a mixture of 50% coolant and 50% deionized
water. (Minimum temperature: -31F [-35C])
For more details about coolant, contact your Lexus dealer.
If the coolant level drops within a short time of replenishing
■
Visually check the hoses and engine coolant reservoir cap.
If you cannot find a leak, have your Lexus dealer test the cap and check for leaks in
the cooling system.
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"LOW"
If the level is on or below the
"LOW" line, add coolant up to the
"FULL" line.
"FULL"
Reservoir cap