Lexus GS 2006-11 :: Engine Oil Low Light Stays On For Few Seconds To A Minute And Then Turns Off

I have a 2007 GS350 AWD with about 110,000 miles right now. For almost the last year or so it has been burning off some oil. By the time its up for an oil change, it occasionally gives me the engine oil low light. It stays on between a few seconds to a minute and then turns off.

I've been telling this to the local Lexus dealership where i've had all my maintenance done, and they eventually did an oil consumption test. They said it was losing about 1.5 liters after 3,000 miles. They say that is within spec.

This issue came up several times while i was still in my 100,000 mile warranty, but they wouldn't do anything as it was in spec. I don't see how i should get a low engine light warning every 3-4k miles and have been pushing them to do something and cover under warranty since it has been documented as an issue before the warranty ran out. Lexus corporate asked for a compression test (which i had to pay for), the results are below:

Cyc#1: 205 dry; 225 wet
Cyc#2: 200 dry; 215 wet
Cyc#3: 190 dry; 215 wet
Cyc#4: 200 dry; 225 wet
Cyc#5: 205 dry; 210 wet
Cyc#6: 190 dry; 220 wet

After Lexus received the results they asked for, they still said: well the oil consumption is in spec so won't do anything.