2017~2021 Oil drain plug stripped from dealer

adumbrille

Member
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2007 Mazda 3 Grand Touring
My mom has a 2017 cx5 2.5 AWD. Its always had dealer oil changes for its entire life. This time she wanted me to change it for her. I go under the car and remove the little access panel and the 8mm hex plug is stripped so bad I cant remove it. I know how to get it off but it would possibly damage it and its Sunday and I dont have another one ready to replace it. Anyone know what to say to make the dealership fix this? Do you think theyll try to fight it?
 
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2013 Mazda CX-5 Sport FWD Auto
I dont think theyll fight a little part like that. If theyre any good, tell them exactly what you noticed. Honey catches more flies than vinegar. If they wont replace it with another drain plug for free (sounds like oil change history has been entirely with the dealer), order a new one and replace it on your own. And then dont go back to that service center.
 

ColoradoDriver

Gen-1 Kodo Design
Contributor
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Denver, CO
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2014 CX-5 Touring
^ Yep, exactly. I mean, it's just a drain plug. If they fight you over that, find a new dealer and just replace it yourself. But approach them calmly, just explain what you found after service there and hopefully they should take care of you.

I'd still find somewhere else though, or just keep doing it yourself. What the hell are they doing to strip a drain plug??? Shouldn't be stripping anything with a breaker bar, ratchet, or torque wrench. (scratch)
 

erhayes

Contributor
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2021CX5 Reserve
Let the dealer change it out. The oil pan may be damaged as well. What kind if idiot will over tighten an allen plug? The problem with many dealers is, they only have one or maybe two regular paid mechanics. Lesser jobs like oil changes, tire rotations and other jobs are often handled by anyone available which can be an uninterested floor sweeper. You still pay the dealer for certified service of course. A real shame because that is where dealers get a bad name but, not all dealers are like that. Ed
 
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2019 Mazda CX-5 GT
I had a dealer do that to my 3. They replaced the oil pan, but your problem sounds more like cross threading or over tightening.
 

yrwei52

2016 Mazda CX-5 GT AWD w/Tech Pkg
Contributor
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Plano, Texas, USA
You can swap out the 8mm hex plug for a traditional socket head drain plug https://www.mazdaparts.org/mazda-oil-pan-plug-washer.html that maybe her dealer won't be able to screw up so easily.
Do not get this hex-head drain bolt P/N HE0310404-995641400 if you really want one:
genuine-mazda-oil-pan-plug-with-washer-15.jpg


It doesnt have flange which should have for a drain plug. Instead, get this hex-head drain bolt found on 2018 CX-5 2.5L and beyond with P/N LFE5-10-404:

⋯ the new oil plug for 2.5NA part no. if anybody is interested.
I got a spare just in case.

20190212-190731-2.jpg


20190212-190723-2.jpg
 

erhayes

Contributor
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2021CX5 Reserve
+1. The flanged bolt is the best if you insist on changing out the Allan head which I like. Ed
 
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CX5 GT
Same happened on my previous car. Not just that but they also had put the wrong oil type and I had that on the receipt. Unbeliavable.

At the end the dealer changed the plug for free plus free oil , free filter when I started complaining to management.
At first the service guy started to sweet talk me that I dont know what I am talking yada yada blah blah......in such case just escalate to higher management.
 

ColoradoDriver

Gen-1 Kodo Design
Contributor
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Denver, CO
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2014 CX-5 Touring
Same happened on my previous car. Not just that but they also had put the wrong oil type and I had that on the receipt. Unbeliavable.

At the end the dealer changed the plug for free plus free oil , free filter when I started complaining to management.
At first the service guy started to sweet talk me that I dont know what I am talking yada yada blah blah......in such case just escalate to higher management.

Yikes. I feel much happier now just doing my own changes.
 

shadonoz

SkyActiv Member
Contributor
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State of Jefferson
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2017 CX-5 GT AWD+
I'm trying to vizualize this. OP, when you say "stripped", what do you mean? To me, stripped implies stripped threads, and then the plug would be loose [and probably leaking]. But yours is tight. Do you mean the shoulders of the hex are rounded?
 
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2018 AWD GT Premium Red/Black
Assuming the hex hole on the oil plug is no longer a hex but oval now.

Yeah, they probably put a hardened steel hex bit into an impact wrench and pulled the trigger before seating the bit into the plug and applying normal pressure.

I had 1 oil change fro the dealer and needed a breaker bar to crack my plug loose. There is no way they torqued it to the 20 some lb-ft spec. The aluminum crush washer was smashed so much it was a larger diameter than the flange on the plug. At least that made it easier to remove, because I could clamp with vice grips and unthread it.
 

shadonoz

SkyActiv Member
Contributor
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State of Jefferson
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2017 CX-5 GT AWD+
Yeah, they probably put a hardened steel hex bit into an impact wrench and pulled the trigger before seating the bit into the plug and applying normal pressure.
That's probably right. I couldn't even imagine that. Impact wrench on the oil plug? The thought makes my blood run cold.