Mazda CX-9 This larger SUV adds a V6 option, as well as more cargo room, to the CX-7 option.

CX-9 transmissions - How good are they?

  #1  
Old 05-21-2019, 01:23 PM
Sean Preston's Avatar
Junior Member
Thread Starter
Join Date: May 2019
Location: MT
Posts: 7
Default CX-9 transmissions - How good are they?

What are some of the miles on transmissions? Did anyone get over 250k on the orig? Any tricks to keep it going?
 
  #2  
Old 05-21-2019, 04:27 PM
Member
Join Date: Jun 2016
Location: Washington, the state
Posts: 86
Default

Keeping them going:
Install a filter in the line to the cooler: https://magnefinefilters.com/main.sc
There are two main makers of inline filters, Magnefine and Filtran; you'll see these under several labels.
(After a transmission failure a filter is usually installed in the line out of the cooler. This is to catch debris bits that lodged in the cooler. If there's no debris, the hot fluid to the cooler filters better than cool fluid.)
By the way, on cars with hydraulic power steering, one of these filters, probably 1/2" size, in the return line to the reservoir will keep the power steering system running longer. All hydraulic systems need clean fluid.

Keep the fluid fresh and good. Plan on a fluid replacement schedule. Modern fluids are probably good for 100,000 miles. Do a full flush and replacement before this, or do a partial drain and refill say every 30 or 40k. It's best to use a fluid that "meets or exceeds" the specs for that transmission. Be skeptical of fluids "recommended" for the transmission. These don't meet the spec...maybe they just haven't be tested (sometimes at a high cost) for compatibility...sometimes they are close to the spec but not exactly meeting it.

Never, ever, change directions while rolling. Never shift to drive while rolling back, and never shift to reverse while rolling forward.
 
  #3  
Old 05-22-2019, 09:53 AM
Member
Join Date: Jun 2016
Location: Washington, the state
Posts: 86
Default

And, if you tow much, install an air-cooled transmission fluid cooler in front of the radiator.
 
  #4  
Old 06-04-2019, 02:37 PM
Sean Preston's Avatar
Junior Member
Thread Starter
Join Date: May 2019
Location: MT
Posts: 7
Default Thanks

I have the extra cooler, Ill add a filter. Hoping to get 300k.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
montanaman2007
Mazda3
4
01-30-2009 11:29 PM
oreo615
Mazda Millenia
0
05-16-2007 05:47 PM
retronintendo
General Tech
3
07-09-2005 10:58 PM


Thread Tools
Search this Thread
Quick Reply: CX-9 transmissions - How good are they?


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.