when i bought mine off the lot it was a 1qt overfilled. I made them remove it and of course the excuse came "we don't get a lot of RC Fs or LC500s in here so the techs are still getting used to them" Now when i go for service, i remind my service guy about 9.3qts - put in 9 check the stick, top off. Hit him with a $20 each time i'm there, haven't had an overfill since.

 

In my case, the dealer told me that their pump was out of calibration. So it was not only my RCF that was overfilled, they were overfilling who knows how many other Lexi.

 

I wonder if the service techs are filling to the proper line on the dipstick while the engine is cold, and when it warms up, it shows half quart over?

 

Old thread but fiured I'd add my take.

Just changed the oil on my 2020 and used two gallons of amsoil oil. After using both I started the car up and it said low oil on the dash. I check the dip stick after it was level and cooled in the garage, and the oil mark is slightly above the min but not at the max mark....

Seems odd...lol

EDIT: I guess I had a brain fart. Apparently i missed the mark that there are only 4 quarts in a gallon...lol So I put 8 quarts in the RCF... whoopies. Time to go shopping for more oil.
I'm so used to every other manufacture putting in 5 quarts of oil in the normal size gallon jug, I just assumed the same with amsoil...smh.


-Nigel

 

Never had any issues with dealership putting the wrong quantity of oil. Usually the deip stick shows it is between the two marks (quite close to the max).

 

My 2022 owners manual says 9.3 qts.

 

I've had Lexus of Thousand Oaks and Lexus of Woodland Hills overfill my oil multiple times. The only ones who have not overfilled it are Tommy from Music Box and Lexus of Oxnard (so far).