Notices
Series II Technical and Trouble shooting Discuss technical details for the Series II RX-8 and any issues or problems you are facing

Coming up on 100k miles: Preventative maintenance question

Old 10-22-2018, 01:41 PM
  #1  
Registered
Thread Starter
iTrader: (1)
 
Join Date: Mar 2014
Location: Philadelphia, PA
Posts: 788
Liked 50 Times in 45 Posts
Coming up on 100k miles: Preventative maintenance question

My 2011 R3 just passed 97k miles and, knock on wood, has no identifiable problems. I anticipate keeping it as my DD (and my family's only car) for the foreseeable future. So, I'm feeling out ideas for preventative maintenance over and above the stuff in Mazda's maintenance schedule. Let's say I can spend up to $500 and prefer OE parts.

Engine was replaced under warranty just before 75k miles, along with the clutch kit, one motor mount, and whatever else comes with a Mazda engine replacement (water pump, coolant, etc.). Cat was replaced under warranty about 20k miles before that. Tires, brakes, coils, plugs, wires, oil, filters, etc. have all been serviced/replaced on normal-to-aggressive schedules. Otherwise, everything is original and has been looked over by a (good) Mazda dealership at least once a year.

I'm thinking I should do the front O2 sensor, partly as a matter of course, and partly because I think my fuel economy might be on a slight but noticeable decline. Does that make sense? Anything else I should look at?
IamFodi is online now  
The following users liked this post: IamFodi
greenone (11-24-2018)
Old 10-26-2018, 06:47 AM
  #2  
Registered
iTrader: (2)
 
Join Date: Mar 2010
Location: Cincinnati, OH
Posts: 91
Liked 7 Times in 7 Posts
I'm at about 114K on my 2009 R3. Also my DD, but apparently this is my 2nd RX-8 with a better than average motor as it's the original. I have no clue what the compression is but don't have any warm start issues, so ignorance is bliss. Assuming hoses and belts were replaced when your motor was swapped. If not, you might want to do that. On my first RX-8, I replaced my coolant overflow tank at about 100K (stuck sensor). While doing that, the nipple on the top of the radiator that it's attached to came off with very little force applied. The end tank had become very brittle. So I ended up also replacing the radiator. I'm planning to change out the radiator on my R3 in the next month or 2 based on that experience. I also pre-mix. Admittedly, I could just be throwing away money on that but my first RX-8 went 147K on original motor (compression was on the low end of scale but still passing and car had no warm start issues) and as mentioned the R3 seems to be fine.

Only other thing I can think of is corrosion. Might be worth it to pull out your wheel well liners and give it a good look and address anything you may find.
TomD_Cincy is offline  
Old 10-26-2018, 08:07 AM
  #3  
////////zoom
 
wannawankel's Avatar
 
Join Date: Nov 2009
Location: Massachusetts
Posts: 1,087
Liked 43 Times in 40 Posts
Originally Posted by IamFodi View Post
My 2011 R3 just passed 97k miles and, knock on wood, has no identifiable problems. I anticipate keeping it as my DD (and my family's only car) for the foreseeable future. So, I'm feeling out ideas for preventative maintenance over and above the stuff in Mazda's maintenance schedule. Let's say I can spend up to $500 and prefer OE parts.

Engine was replaced under warranty just before 75k miles, along with the clutch kit, one motor mount, and whatever else comes with a Mazda engine replacement (water pump, coolant, etc.). Cat was replaced under warranty about 20k miles before that. Tires, brakes, coils, plugs, wires, oil, filters, etc. have all been serviced/replaced on normal-to-aggressive schedules. Otherwise, everything is original and has been looked over by a (good) Mazda dealership at least once a year.

I'm thinking I should do the front O2 sensor, partly as a matter of course, and partly because I think my fuel economy might be on a slight but noticeable decline. Does that make sense? Anything else I should look at?
Why was your cat replaced - how did you know it was an issue?
wannawankel is offline  
Old 10-26-2018, 03:23 PM
  #4  
Chief Meteobraptologist
iTrader: (1)
 
Loki's Avatar
 
Join Date: Jun 2009
Location: Montreal
Posts: 4,540
Liked 293 Times in 261 Posts
I'd leave the O2 alone. Modern ECUs, including RX8's, run diagnostics on sensors and can recognise when it's out of spec. O2 sensors lose responsiveness, but they don't lose really lose calibration until much later. So it'll still measure the correct AFR, but when AFR changes, the sensor is slow to respond and the ECU's routinely tweak the mixture to check for that.

I'd focus on soft aging plastics and rubbers: rad hoses, coolant tank, radiator end tanks. Weather seals and gutters. Wipers.
Suspension bushings, bump stops and shock mounts. Especially the sway bar endlinks, they can get wobbly with time. Make sure you test them with car level
Wheel bearings and ball joints.
Oil cooler, condenser and rad fins.
Brake slider pins, brake fluid and piston seals, handbrake mechanism.
Coils & Cat

Doesn't mean you need to replace all of these, but examine thoroughly.

Last edited by Loki; 10-26-2018 at 03:29 PM.
Loki is offline  
Old 11-27-2018, 10:20 PM
  #5  
Registered
iTrader: (9)
 
Chrishoky's Avatar
 
Join Date: May 2010
Location: North Wales, PA
Posts: 1,039
Liked 6 Times in 6 Posts
FYI Fodi's car was totaled recently, but he made it out unscathed. He joined the BMW club
Chrishoky is offline  
Old 11-28-2018, 03:42 AM
  #6  
Registered
Thread Starter
iTrader: (1)
 
Join Date: Mar 2014
Location: Philadelphia, PA
Posts: 788
Liked 50 Times in 45 Posts
Originally Posted by Chrishoky View Post
FYI Fodi's car was totaled recently, but he made it out unscathed. He joined the BMW club
Physically unscathed, anyway.

The fact that the crash happened not too long after this thread is one of the things that still hurts. :/
IamFodi is online now  
Old 11-28-2018, 11:50 AM
  #7  
////////zoom
 
wannawankel's Avatar
 
Join Date: Nov 2009
Location: Massachusetts
Posts: 1,087
Liked 43 Times in 40 Posts
is your car totaled? details?
wannawankel is offline  
Old 11-28-2018, 12:04 PM
  #8  
转子之魂
 
UnknownJinX's Avatar
 
Join Date: Apr 2017
Location: Victoria, BC
Posts: 2,069
Liked 291 Times in 269 Posts
Originally Posted by wannawankel View Post
is your car totaled? details?
Yes, he posted it in another thread.

https://www.rx8club.com/lounge-4/goodbye-r3-268751/

I wouldn't ask for any details if I were you. He's not that comfortable talking about it.
UnknownJinX is online now  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
TheWyvern
Series I Tech Garage
13
05-04-2017 02:56 PM
rotarywanker
Series I Tech Garage
8
10-20-2015 11:26 AM
underprime
New Member Forum
2
06-09-2013 11:23 AM
dizenman
Series I Trouble Shooting
21
01-08-2012 04:46 PM


Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:

Quick Reply: Coming up on 100k miles: Preventative maintenance question


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 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.