ROBKOWSKI

On 4/21/2023 at 9:21 PM, RX400h said:

Did you flex the belt to see if there are any cracks? What year did you have the belt replaced?

Yes, nothing.  I am not says not to follow manufacturers suggestions.    

Thanks for your comments.  I might give it a try.  

I had the belt replaced in my 2008 Rx400h at 100000 miles.  I asked for the part back and the belt was hardly worn.  I inspected it with a magnified glass and found nothing.  

Its a safety feature.  I don't think you can change it.  Just curious how many miles on your RX?  What's your average MPG? 

I have a 2008 RX 400h.  I been using 93 octane fuel since I bought it used at 50 K miles like the owner manual state should be used. I average 24.5 MPG.  Today I put in 89 octane Shell gasoline.  My wife was upset with me but I am tired of paying for premium 93 octane. I know one tank is not going to hurt anything.  What are you all using and what's your experience?  Thank you.

Sounds good, I will check it out.  

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!

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? 

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.