Lextranny

How often do you change your oil?

parula

5k Mobil 1 or equivalent.

Lextranny

Wow! 5k? Someone told me 10k.....

xfirechief

Can go 25K or 1 year with Amsoil. 35K with one of their oils.
Change the oil filter at 6 months. Have done this since the late 80's with never a engine problem. I have, in the past sent in oil samples to be tested and always OK. Even tells u how your air filter is doing.

Lil4X

Manual says 5K in "severe" service (taxis and the like) - 7.5K in normal service. I have it changed at about 5K as cheap insurance. Ask anyone who tells you their oil is good for 10K to 25K or more if they'll warranty your engine (Lexus won't).

xfirechief

I have been told that with proper testing of the lube the warrenty is in effect as long as the test proves the lube to be OK. This is how the big rigs can go so long on their oil, TESTING of it.

I have been using synthetics since the late 70's and never a engine problem but I do monitor it closely.

Lextranny

I've heard that someone did a test.....by using Mobil 1 Synthetic vs. conventional oil it gives you an extra 15hp? Is this true? For those.....that use synthetic do you feel that extra kick??

Campbell

On an RX....NO

Lextranny

Anyone else?

spwolf

you should be more than fine with 7.5k, as European schedule is 10k miles for oil changes...

Lextranny

The manual says 5k but that's for conventional oil not "Fully Synthetic".
So........

dhamaka127

This is probably 10k kilometers and not 10k miles. That can by why its 10K for them.

that should roughly covert to 7.5 k miles.

JorgeGVB

My Mercedes used synthetic oil and the recommeded change was 10K miles. I think I read BMW goes 15K now. I was rather surprised to see Lexus does not use synthetic oil yet.

Tammy

You asked for advice on the frequency; given... Five thousand miles.

If you don't want to change the oil but every fifteen thousand mile, fine.
It's your engine; It is your privilege to damage it, if you like.

Synthetic oil type adding horsepower is a dream and marketing scam.

You can not compare the German examples that are designed for long oil changes.
These are designed to run only synthetic.

The RX V6 is designed to run natural lubricants ... plain and simple

JorgeGVB

Probably best to ask your dealer. Most dealers will switch your RX over to synthetic, so they should be able to give you a recommendation. However, you should be able to safely go more than 5K miles on synthetic oil.