jawadarsha

Hi everyone, I have ES350 year 2007, I use Castrol fully Synthetic Oil as engine oil.
My question is can I use normal oil(not fully synthetic) on next oil change? what effect would it be on the engine, is there anything special needed to be done at the time of oil change like flush engine etc?
Please, any help will be appriciated

ESh

Why you would do that? Fuly synthetic is recommended for this engine.

jagtoes

There should be no noticeable difference. Just change the oil and filter and put the new dino oil in. Both my 2008 and my 2010 were dealer filled with Castrol 5W-30 dino oil and that is all I use for my oil changes. I change every 5000 miles which is around once a year.

mlacomb

Nope. 5w30 dino oil is recommended, feel free to run synth. I've personally had 0 issues switching back and forth.

jawadarsha

great, thanks guys, it looks like changing oil back and forth is no problem.
LjeksesES: The previous owner of vehicle had synthetic oil and its too much money for me to change it to synthetic everytime from lexus dealer (almost double) however at the same time I also want to keep car history mantained at dealership

jkeller

I used to buy mobil 1 5w-30 from wally world and take it with me to the dealer for my 07ES. Lexus never had a problem with it, in fact it was my service advisor who suggested it to me.

mlacomb

Yeah, my dealer adds $50 or so to the $50 oil change cost for synth.... I only have them do it when I can't get around to it in time.

oldgrump

There is Lexus documentation that states that Lexus does not "like" the use of dino oil after synthetic oil has been used. I cannot find the "Oil Usage" TB or Tech Tip that made that statement, but I found this: http://lexus2.custhelp.com/app/answe...%2C1284%2C1325

jawadarsha

Oldgrump - thanks for your research into this. I would try to take my own Synthetic oil to dealership and ask them to change it for me, if they are fine with this option..