Spinning oil drain plug need advise..

[TiE2000]

Need some help / advise. Bought a slightly used 2021 Supra from a high end Mercedes dealership here in Houston beginning part of July. Car has been an absolute blast. Got a message that my scheduled old change is comming up in October. Me, being me and not knowing when the last time the oil was changed, took it to my local Toyota dealer. They took the car back and gave me some bad news. They said whoever changed the oil last, over torqued the drain plug. it's now just spinning and they can't get it out.

Offical records show the last time the oil was changed was by they toyota dealership the car was purchased through, 5 months ago. But it may have, (can't confirm) changed by the Mercedes dealer I bought the car through, with an AS IS clause.

Asked the Toyota dealer I was at, if they need to replace the oil pan if it will be covered under warranty. They were unsure. Car is not leaking oil, but oil is going to need to be replaced at some point. I'm unsure of my options at this time. To I just bite the bullet buy a new oil pan, do I fight with Mercedes or do I fight with Toyota? How would some of you handle the situation?

As a note, my Toyota dealer is going to speak with their manager this week and get back to me. I currently have the car

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[Quinn]

Not a B58 but I made a mistake doing a quick oil change at the track without a torque wrench in my N55 and got my pan nut to free spin too. My BMW dealer said the correct fix is a $900 oil pan but because it’s so common in the aluminum pans, they could upsize my threads and bolt for a much smaller fee and I chose that. It’s been about two years with numerous oil changes since and no issues.

 

[Kiske]

Put vicegrips on it and apply side pressure while turning it counter clockwose to remove. Once it is out you can tap the pan for an oversized drain bolt. Make sure you fill and drain a few extra quarts of oil letting it flush out the metal shavings. All before putting in the oil you intend to run and running the vehicle.

The drain plug (IIRC) is M12x1.5mm so you need to step up from that. You may also look at getting a fumoto drain valve (F109SX for OEM replacement) so all future oil changes only require you to turn a valve.

 

[J29DB03]

No idea your access to lifting the vehicle, toolset, or how mechanically incline you are but for reference, a new oil pan, plug, and plug gasket appears to be ~$670.00.

 

[TiE2000]

Put vicegrips on it and apply side pressure while turning it counter clockwose to remove. Once it is out you can tap the pan for an oversized drain bolt. Make sure you fill and drain a few extra quarts of oil letting it flush out the metal shavings. All before putting in the oil you intend to run and running the vehicle.

The drain plug (IIRC) is M12x1.5mm so you need to step up from that. You may also look at getting a fumoto drain valve (F109SX for OEM replacement) so all future oil changes only require you to turn a valve.

I had no idea those Fumoto valves existed... seems this a common issue with these aluminum oil pans. I think I am going to go down this route, once I get the plug out. I have a feeling even if I replace the pan, this may occur again.

I've never tapped anything before, but want to order the right size. I'm thinking toyota won't install the valve for me, so may need to hit up a local shop. Appericate the suggestion!

Edit- so the stock unit is 12mm×1.50m looks like fumoto sells a 12mm×1.75 valve. Me not knowing anything about taps, is that too big or small?

 

[Kiske]

The bolt is a M12 and the thread pitch is 1.5mm. Thread pitch is the spacing of the threads on the bolt. Going from a 1.5 to a 1.75mm thread pitch means that your increasing the distance between the spacing between the high points of the crests/ridges that screw in. In a very broad sense increasing thread pitch example would be going from a fine thread bolt to a coarse thread bolt. This will NOT be your solution.

The stock pan is a 12mm bolt. So you would initially want to go 1mm larger to a 13mm bolt. Looking on Fumoto's website the next size UP they offer is 14x1.5mm so this will be what you want. This will be 2mm larger than the factory bolt which is fine. You can technically do whatever thread pitch bolt you want so long as it matches what you tap into the pan. BMW/Toyota found a 1.5mm thread pitch was suitable during their R&D so I would go with that as well. So the bolt your wanting to install is a drain bolt size you are wanting to install is M14 x 1.5mm!

You now need to buy an thread tap that matches your bolt's size, so also M14 x 1.5mm. Any automotive store such as Autozone, Nappa, O'reillys or even most larger hardware stores will carry this. You can either buy the individual tap or a simple kit if you want the tool to hold the tap for future 'mishaps.' Plan somewhere between $9 and $45 depending on what you do. If a shop is doing this they may not even need the tap and/or holder. In my experience it is just easier to have everything ready for them so you aren't stuck leaving the car longer than anticipated with higher costs.

Lastly your going to need a Fumoto Drain Valve that fits the M14 x 1.5mm.The GR supras oil pan is a straight shot down through an quick access release. You need a straight valve that is short to give you the most clearance. (Any of them work, and you would have to absolutely wreck the underbody before you could damage the pan's drain. That being said I like to get as much clearance as possible so I would go with the "S" line which is the shortest straight one you can buy. The specific Fumoto Drain Valves your looking for (if your following my post) is F-106S

Next your going to want to buy a drill to bore through the old ruined threads and give you a clean, smooth surface before tapping your new threads. For a M14 bolt size your going to want a 12MM drill bit (2 sizes down.) Grab a little packet of grease at the autoparts store too; you can glob it on the drill bit to catch a lot of the aluminum shavings while drilling.

Once you get the old bolt out and the oil initially drained it shouldn't take more than 10 minutes to drill/tap the pan, flush it with oil, re-drain the system and then finish your oil change as originally planned. The GR Supra's oil pan bolt is a straight shot down and require nothing but a little round cover to be quarter turned to access. 20-30minute job TOPS. All and all if your buying the valve, tap, and drill bit you should only be out $55 for tools and parts. Get it done and blu loctite that fucker, not because you need to but, as a testament that you will never be removing it again! lol

 

[TiE2000]

The bolt is a M12 and the thread pitch is 1.5mm. Thread pitch is the spacing of the threads on the bolt. Going from a 1.5 to a 1.75mm thread pitch means that your increasing the distance between the spacing between the high points of the crests/ridges that screw in. In a very broad sense increasing thread pitch example would be going from a fine thread bolt to a coarse thread bolt. This will NOT be your solution.

The stock pan is a 12mm bolt. So you would initially want to go 1mm larger to a 13mm bolt. Looking on Fumoto's website the next size UP they offer is 14x1.5mm so this will be what you want. This will be 2mm larger than the factory bolt which is fine. You can technically do whatever thread pitch bolt you want so long as it matches what you tap into the pan. BMW/Toyota found a 1.5mm thread pitch was suitable during their R&D so I would go with that as well. So the bolt your wanting to install is a drain bolt size you are wanting to install is M14 x 1.5mm!

You now need to buy an thread tap that matches your bolt's size, so also M14 x 1.5mm. Any automotive store such as Autozone, Nappa, O'reillys or even most larger hardware stores will carry this. You can either buy the individual tap or a simple kit if you want the tool to hold the tap for future 'mishaps.' Plan somewhere between $9 and $45 depending on what you do. If a shop is doing this they may not even need the tap and/or holder. In my experience it is just easier to have everything ready for them so you aren't stuck leaving the car longer than anticipated with higher costs.

Lastly your going to need a Fumoto Drain Valve that fits the M14 x 1.5mm.The GR supras oil pan is a straight shot down through an quick access release. You need a straight valve that is short to give you the most clearance. (Any of them work, and you would have to absolutely wreck the underbody before you could damage the pan's drain. That being said I like to get as much clearance as possible so I would go with the "S" line which is the shortest straight one you can buy. The specific Fumoto Drain Valves your looking for (if your following my post) is F-106S

Next your going to want to buy a drill to bore through the old ruined threads and give you a clean, smooth surface before tapping your new threads. For a M14 bolt size your going to want a 12MM drill bit (2 sizes down.) Grab a little packet of grease at the autoparts store too; you can glob it on the drill bit to catch a lot of the aluminum shavings while drilling.

Once you get the old bolt out and the oil initially drained it shouldn't take more than 10 minutes to drill/tap the pan, flush it with oil, re-drain the system and then finish your oil change as originally planned. The GR Supra's oil pan bolt is a straight shot down and require nothing but a little round cover to be quarter turned to access. 20-30minute job TOPS. All and all if your buying the valve, tap, and drill bit you should only be out $55 for tools and parts. Get it done and blu loctite that fucker, not because you need to but, as a testament that you will never be removing it again! lol

Thank you very much! Probably the best explanation on a forum I've seen I years.

 

[TiE2000]

Wanted to give an update. Just got a call back from my local Toyota dealer. They said they will replace the Pan under warranty. They've already ordered the part and expect it to be onsite in 2 weeks. Lucky for me I ordered 2 sizes of the Fumoto valve. One at 14mm×1.5 and the stock size 12mm×1.5. Going to ask Toyota to install see what they say. I'll keep the larger size on hand for just in case. Also wanted to give another shout out to Kiske! Thanks for your advise!

 

[Dannyvandelft]

Side note: when a dealership sells a very young car "AS IS" immediately assume something is wrong with it.
Hopefully the drain plug spinning is the reason, and not something else down the road.

 

[baagel]

I thought, from an older thread on here, that the only Fumoto valve that could actually install properly on the Supra was the F109SX.

 

[Last Lemming]

I did buy a tap for the oil drain plug but I think it’s only 1 mm bigger. Is this enough or do I need to go to millimeters bigger

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