High oil consumption

[ROBKOWSKI]

My 2008 RX400h with 136,000 miles uses a quart of oil at about 1500 miles.  No leaking is occurring and I do not see any smoke from exhaust pipe. The oil was changed every 5,000 miles since new.  Anyone else have this issue?  Car runs and drives great.

[RX400h]

Are you the original owner?

Our RX400h engine uses no oil. It's oil was also changed every 4500-5000 miles with synthetic oil.

[ROBKOWSKI]

2 hours ago, RX400h said:

Are you the original owner?

Our RX400h engine uses no oil. It's oil was also changed every 4500-5000 miles with synthetic oil.

Yes, I am.  I switched to a 5-20W semi synthetic oil and uses a little less oil.  How many miles are on your car?  What kind of mileage are you getting?  I am about 26 MPG average city/highway. I wonder how long our batteries will last? 

[RX400h]

We have about 136,000 miles on ours. I use either 5W-20 or 5W-30. Maybe a 5W-30 will slow down your consumption.

I do throw in a bottle of Chevron Techron into the tank, once or twice a year. This should help with carbon buildup on valves and pistons.
Mileage is 24-26 depending upon driving route. 

There are RX400 owners in this forum whose vehicles have over 250,000 miles on them (original battery pack).

 

[ROBKOWSKI]

Thanks for the information.  I will try the 5-30W on the next oil change.  I trying to drive her a few more years and get a new RX hybrid then.  Take care!

[RX400h]

Thanks, Robert. You do the same. By the way, there's a youtube channel called "The Car Care Nut" in which a certified Toyota/Lexus master mechanic talks about all kinds of things related to the brand. He also occasionally reviews other brands. I watch his videos every so often and learn a thing or two.

[ROBKOWSKI]

Sounds good, I will check it out.  

[David Johnson]

I had this problem with my daughter's 2017 Honda CRV. I replaced the PCV valve and problem solved. Try that if it has not been fixed by something else.