Loud lifters? - ClubLexus - Lexus Forum Discussion

RX - 2nd Gen (2004-2009) Discussion topics related to the 2004 -2009 RX330, RX350 and RX400H models
Sponsored by:
Sponsored by:

Loud lifters?

Old 08-10-16, 10:17 PM
Driver School Candidate
Thread Starter
Join Date: Feb 2016
Location: Pennsylvania
Posts: 24
Thanked 1 Time in 1 Post
Default Loud lifters?

This is my first Lexus (2009 rx350). When I start it it sounds a little loud like my lifters, someone said they are probably hydraulic . This is usually only the first start of the day and it usually quiets after a couple of miles. Does anyone have any insight on this? I am hoping this is normal. The car runs and drives great with no other issues. I do run 91 octane and the oil previously in it was a blend. Now switching to full synthetic.ps it has 93,000 miles
Pepp is offline  
Old 08-12-16, 07:44 AM
Join Date: Aug 2014
Location: North Carolina
Posts: 161
Thanked 1 Time in 1 Post

Couple of things. 1. If it is truly lifters, No it is not normal. 2. Are you sure it isn't piston slap which does happen to some RX 350s. It sounds like a knocking sound, only it's not the connecting rods. It only happens at start up when the engine is cold. Our RX 350, 09, has this problem and had it from when we bought it (58K on the clock). I did a search here and found it does occur with some RXs and there's nothing that can be done. The cause has something to do with clearances in the engine when cold that self correct when the engine is warm. We're using a synthetic mix and do not plan to use a full synthetic.
roadbike56 is offline  
Old 08-13-16, 06:38 AM
Lead Lap
Join Date: Mar 2010
Location: FL
Posts: 462
Thanks: 0
Thanked 21 Times in 21 Posts

Are you using 0W20 oil? Lexus changed their oil recommendations a few years ago so your owners manual may be out of date. With 5 Q Mobile1 costing $25 at Walmart, it is a no brainier to use synthetic. I have been changing every 10k for many years and the engine looks new inside.
Attached Files

Last edited by smassey321; 08-13-16 at 06:45 AM.
smassey321 is offline  
Old 08-14-16, 07:08 PM
Driver School Candidate
Thread Starter
Join Date: Feb 2016
Location: Pennsylvania
Posts: 24
Thanked 1 Time in 1 Post
Default Loud lifters

My owners Manuel says to use 5w 30. Should I switch to 0w 30? Wouldn't this run thinner and be a little louder? I did find a google response from a lexus mechanic that stated this engine runs a little louder due to hydraulic lifters and something about the injectors. I forgot which engine this was (2gr?) but is this the way the engine is supposed to sound? It almost sounds like a low noise diesel.
Pepp is offline  
Old 08-15-16, 10:05 PM
Pole Position
Join Date: Dec 2007
Location: Ontario
Posts: 269
Thanks: 0
Thanked 4 Times in 4 Posts

My second gen that I had for seven years did sound like a diesel at start up especially in the winter. I didn't hear during the test drive and three days that I could have exchanged it.

You will have to live with it and I don't think using synthetic oil will make any noticeable difference but worth a try.

The 3rd gen that I have now sound quieter so maybe Lexus changed the design (or added better noise reduction or both).
lex_rx is offline  
Old 08-16-16, 06:24 PM
Driver School Candidate
Join Date: Mar 2013
Location: wa
Posts: 26
Thanks: 0
Thanked 2 Times in 2 Posts

I put some liqui-moly hydraulic lifter additive in my rx330 recently and the start up noise (3-5 seconds, longer if not driven) completely went away after 600 miles.
pablo87 is offline  

Thread Tools
Search this Thread
Quick Reply: Loud lifters?

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: