Correct, rear differential. Just standard oil service changes and inspections and fluid top-offs. The car is well-taken car off. Not noticing any issues.
Yes, I have. I've made an effort to build a report with the Service Manager. Seems like a good guy. I did ask him about the price of the spark plugs. Is the default spark plug recommended or is there a different recommendation? I've changed plugs before.
Yeah your 2016.5 CX-5 IMO is the best、and the most reliable CX-5 ever. The only thing you should pay a little more attention to is the serpentine belt tensioner, and may be the VVT solenoid oil control valve at higher mileage.
You should check owner’s manual for required maintenance schedule. 75K miles change interval is for spark plug change. But fuel injector service has never been mentioned in the maintenance schedule. With recent price hike on Mazda OEM parts, the OEM spark plug PE5R-18-110(A) now is $36.97 MSRP each, so $387.44 - ($36.97 X 4) = $239.56 which should be about 1.5 hours of dealer labor charge for a 20-minute job! Worse, the dealer could use much cheaper PE5R-18-110-MV OEM “Value” spark plugs (MSRP $15.00 a piece) like they do oil changes using cheaper OEM “Value” oil filter.
This fuel injector cleaning process described by your Mazda dealer has no difference like you buy a bottle good old Chevron Techron fuel system cleaner and dump it into the fuel tank when you need the gas. You can buy at least 55 bottles of Techron for $219.95 you’d pay your dealer for “fuel injection service”.
Sorry, I've been doing those myself as needed.
'Just had OEM plugs replaced in my 2019 at the dealer - cost $182.15.
Your Mazda dealer is greedy and has 20% additional markup over the MSRP!
Yes.
Yes, I would. Do it 3 times including one with the pan drop for filter cartridge change. Make sure to use Mazda ATF FZ.
At 74K miles, it’s a good practice to change the gear oil in front transfer case as it’s never been changed. Both front TC and rear differential use the same Mazda gear oil SG-1 so you can do both at the time.
Not on any maintenance schedule either. But these two are very common problems reported by members here.
With current high dealer labor rate, this’s a great price if the dealer didn’t use the OEM “Value” spark plugs like they always use OEM “Value” oil filter when they do the oil change.
=> I'll look into this. Sounds like the PE5R-18-110A is preferred?
Your Mazda dealer is greedy and has 20% additional markup over the MSRP!
You can get thr OEM plugs, part no. PE5R-18-110A online, that’s the most expensive one. Or you can get the OEM “Value” plugs, PE5R-18-110-MV for about the same price as the NGK OEM equivalent, ILKAR7L11 / 94124 iridium spark plugs.
=> What mileage intervals are suggested? At which three would the filter cartridge be changed?
=> On do rear if submerged in water? it was already done at 35k. Dealer recommended. Unless I'm misunderstanding this.
Mazda OEM PE5R-18-110A spark plug is the most expensive one available. Many have chosen NGK OEM equivalent ILKAR7L11 / 94124 iridium spark plug for a half of the price. See @txt990’s post in post #12 above.
Nobody believes there’s the life-time fluid exists. Since there’s no said maintenance schedule for ATF and gear oil changes, we can only use most opinions from DIYers experience. Many believe the ATF should be changed at 50K ~ 75K miles. You can only do the drain-and-fill for Mazda’s SkyActiv-Drive automatic transmission, and you can only drain a half of the ATF out hence you shoul do it 3 times with some interval in between. Whether you should drop the pan for filter cartridge change inside, or when do you want to do that in 3 drain-and-fills, is a personal preference.
I have driven over 2k now with the NGK ILKAR7L11 plugs and find no difference between the Mazda plugs. Economy & performance are the same. I would recommend them. Also, Advanced Auto will price match with Rock Auto. Just chat with them online and they will honor the price online and then pickup at store. I paid about $46 for the plugs.
So it sounds like it's time to do the gear oil in the front transfer case (not done yet) and again in the rear differential (done at 35k). Then also do a drain-and-fill for Mazda’s SkyActiv-Drive automatic transmission. I don't have the tools or place to do this myself so I'd need to go in somewhere.
Looks like I need to search for 94124 at Rock Auto for the NGK ILKAR7L11. Looks like Amazon is $11.00/ea. But Adv Auto will match at 50% off? 10.02 at Rock Auto but Adv Auto shows them for $19.79 ea.
Yes, Advanced will match Rock Auto's price. Just chat with their customer service online. They will ask you for Rock Auto's link and you provide it to them. Plus Advanced is an authorized dealer per NGK.
