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    New Spark Plugs @ 50,000 miles?

    At 40k I noticed a bit better performance with the new plugs. It wasn't a big deal, but I'm glad I did it. The plugs looked good. I have no idea how long the plugs will keep working OK until they either work noticeably poorly or one just quits.
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    2022 CX-9 Clunk over speed bumps

    It is a thrust bearing that allows the suspension to turn while carrying the weight of that corner of the car. The only one I've had fail was after hitting some bad potholes buried under snow. These are usually replaced during every normal, i.e., high mileage, replacement of worn out struts...
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    2016~2023: Improving/maximizing fuel economy

    The air filter doesn't hurt the gas mileage. A dirty filter with higher resistance just means that the throttle butterfly doesn't have to close, throttle, the induction air as much. What harm does a dirty air filter do? It limits the top end power. Think of having a pebble under the...
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    Key fob stopped working even after battery change

    Double check that you got all the innards of the fob in the correct spot and the battery in the correct side up. If all that is OK, and the buttons aren't jammed with dirt or lint, it might be time to go to a locksmith for a new fob. A locksmith can likely supply & program a key fob for much...
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    Mazda Warranty Extensions for Cylinder Head Leaks for TSB01-002/23

    My understanding of the problem is that if the external coolant leak is so severe that the engine overheats, and the cylinder head warps, and the coolant then enters the oil spaces, and the engine is destroyed, the cause is from the external coolant leakage. The question then will be if the...
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    CX-50 Hybrid coming this fall

    This is a great video on the Toyota planetary gear CVT: https://www.youtube.com/watch?v=vHc-_E8 xWnM I've had good results with it in a Prius Prime for 70,000 miles. The Canadian Mazda site says that the turbo CX-50 will have the 2.5T Mazda Sky-Activ engine. They don't say which 2.5 normally...
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    New battery at 45,000 miles? 2020 CX-9

    Johnson Controls sold their battery operation; the name of the new outfit is Clarios. Yep, many labels including Interstate. East Penn/DEKA is another U.S. battery maker; I've seen these in O'Reilly & NAPA. Exide Technologies is another. Both these also have several labels on the batteries...
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    What 5W30 oil brand do you use in your CX-9?

    The youtube video by "A Toolbag?" A couple of points: Every oil filter has a bypass valve. It opens to ensure oil flow through the engine when the oil is very cold & thick and too thick to filter, and also in case the filter media clogs. Unfiltered oil is better than no oil. The bypass...
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    What 5W30 oil brand do you use in your CX-9?

    My current favorite motor oil is Valvoline Restore & Protect: The Motor Oil Geek: Valvoline Restore & Protect The Geek, Mr. Lake, is a tribologist, a certified expert in friction and lubrication, and what he says matches my knowledge and experience with oils...my career involved operating and...
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    Mazda Dealer Promo Tire Recommendations for 2018 CX-9 AWD

    In 62 years of driving I've had to replace 2 damaged tires. I don't buy the extra insurance. Agree, because they need about the same outside diameter on all 4 tires. I don't know if many shops have the machine to shave tire tread. Find the best price on tires you can find including mounting...
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    Cracked Cylinder Head (2018 CX-9)

    Oil that is brown with use will turn milky chocolate brown with coolant in it. Brand new oil might have original green dye (but I know of only one brand of oil that does this) or the new oil might be so light amber than the green coolant actually does tint the oil.
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    2019 CX-9 Oil Leak?

    "got worse after few oil changes" Does the person changing the oil leave the plastic noise-damping cover in place when adding oil and thereby slop oil onto the top of the engine which drips down? The cover pops loose with a tug and fits back into position with a nudge. If it is an oil pan...
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    2021.5 CX-9 Vibration at Highway Speeds

    And, it might be only one rear CV joint, but no shop will replace one unless it visually looks bad and possibly face a returning angry customer with a not-fixed problem. I checked Mazda parts suppliers. The axles and the required axle nuts are backordered. If you want to do the job try...
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    Obnoxiously loud brakes

    To add to what sm1ke said, always insist that a description of the problem be written on the repair order, not just the service writer's guess at a fix. If the work did not fix the problem, don't pay. Always pay by check. This gives you a few hours or a day to stop payment on the check if the...
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    Need help with changing fluids (2010 CX-9)

    Consider installing in line filters for both the transmission and the power steering. Either Magnefine or Filtran brands work well. You'll need either a 5/16" or 3/8" filter, depending on the hose inside diameter, for the inlet to the transmission cooler,* and a 1/2" filter for the outlet from...
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    Mazda Dealer has no transmission fluid?

    You think the prep guy is given the time to warm the transmission, remove the air cleaner, and check the ATF level? :ROFLMAO::ROFLMAO::ROFLMAO::ROFLMAO::ROFLMAO:
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    Mazda Dealer Promo Tire Recommendations for 2018 CX-9 AWD

    Set aside the otd price; we don't know your sales tax nor what that shop will charge you for mount, balance, disposal, TPMS (does the '18 have that?). What is the price for the tires only? Do you live in thin snow country, not deep snow country? The CrossClimate2 is a very good all-weather...
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    Guide: 2016~2021 CX-9 DIY Transmission Fluid Drain and Fill + Filter Change

    Is there an easy way to unplug a power wire to the fan so it can't operate? Don't forget to plug it back in when you're done.
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    Review of K&N Air Filter for Mazda 2.5T engine

    ??? Never go negative? It has to go negative for any air to flow. Let's call atmospheric pressure zero psig...zero gauge pressure. Air will only flow downhill unless it is pumped, i.e., flow from a higher pressure area to a lower pressure area. If the higher pressure area is at zero, the...
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    2nd Gen CX-5 and CX-9 Suspension Compatibility?

    You can look at one of the on line Mazda parts sellers and check the part numbers for each car for the stock parts.
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