Oil drain nut stripped

StereoSound · 25-07-2018 03:33PM #1

Any idea how to open it? Tried spliner and regular sockets but it just won't grip it...

My friendly local car service center won't loosen it for me since they say they have to do the complete oil change if they open it. They won't use my own oil and filter either because they need to warranty the parts, so they say. The previous person who owned this car stripped the bloody nut. How do I get it off? Its a Hyundai Coupe.

Thanks

Effects · 25-07-2018 03:34PM

Could you pay for it this time and have them replace the nut?

Toyotafanboi · 25-07-2018 04:15PM

Vice grips? Force a smaller socket onto it? Cut a line through it and open with a flat head screwdriver?

StereoSound · 25-07-2018 04:20PM

Toyotafanboi wrote: »

Vice grips? Force a smaller socket onto it? Cut a line through it and open with a flat head screwdriver?

I'm thinking I'll buy a vice grips and see if that works..

Failing that I'll just get the oil changed by a garage and let them put a new nut on it. Pain paying €100 for an oil change I've been doing myself on cars for the past 15 years.

mickuhaha · 25-07-2018 04:23PM

It's a size 18 so a size 17 hammered onto it will pull it off. Did this when I lost the anti teft lock nut socket for the car.

Stanford · 25-07-2018 04:24PM

StereoSound wrote: »

I'm thinking I'll buy a vice grips and see if that works..

Failing that I'll just get the oil changed by a garage and let them put a new nut on it. Pain paying €100 fo an oil change I've been doing myself on cars for the past 15 years.

Make sure you have a replacement nut before you go mental on the seized nut

Del2005 · 25-07-2018 04:26PM

Buy an oil suction pump. First time I used mine we took the sump nut out and not a drop of oil came out, have a good look at the filter for metal fragments.

Much less messy than draining oil while lying on the ground.

StereoSound · 25-07-2018 04:28PM

Del2005 wrote: »

Buy an oil suction pump. First time I used mine we took the sump nut out and not a drop of oil came out, have a good look at the filter for metal fragments.

Much less messy than draining oil while lying on the ground.

What about the sludge on the bottom of the sump? How much of that will get removed with a pump?

mickuhaha · 25-07-2018 04:28PM

You could drain it via the dip stick if you had a pump. Get you down the road a few more months.

StereoSound · 25-07-2018 05:02PM

What about this electric pump? Won't break the bank at that price if it works.

https://www.micksgarage.com/d/oil-and-fluid-extractors/products/2357280/oil-extractor-pump-12v

Stanford · 25-07-2018 05:13PM

At this stage €100 for the garage including oil, new filter, labour and new nut is starting to look cheap!

Del2005 · 25-07-2018 05:50PM

StereoSound wrote: »

What about the sludge on the bottom of the sump? How much of that will get removed with a pump?

There was none when I pulled the bung. So unless you drop the sump every time you change your oil the sludge doesn't come our.

tcawley29 · 25-07-2018 05:52PM

Something like this should make short work of it OP.

https://www.ebay.ie/itm/Bergen-11pc-Bolt-Extractors-Socket-Lock-Nut-Remover-Extractor-2581/152809009402?hash=item23942070fa:g:Zx4AAOSw0yxZtBAC

I did the same with a caliper bolt a year or two ago

Del2005 · 25-07-2018 06:44PM

tcawley29 wrote: »

Something like this should make short work of it OP.

https://www.ebay.ie/itm/Bergen-11pc-Bolt-Extractors-Socket-Lock-Nut-Remover-Extractor-2581/152809009402?hash=item23942070fa:g:Zx4AAOSw0yxZtBAC

I did the same with a caliper bolt a year or two ago

Problem with this is the sump is soft so too much force and you'll have a bigger problem.

tcawley29 · 25-07-2018 06:56PM

Del2005 wrote: »

Problem with this is the sump is soft so too much force and you'll have a bigger problem.

There shouldn't be any need to use force though.

When I put the right size extractor on the bolt with a few light taps of a hammer (i do mean light) it came off relatively easily.

Cerco · 25-07-2018 07:02PM

Del2005 wrote: »

Problem with this is the sump is soft so too much force and you'll have a bigger problem.

If the casing is soft then it might be damaged by the cross threaded bolt.
I would let the garage sort it out, then carry on yourself for the subsequent servicing. They would have the tools to remove and to retread etc. if necessary.

Del2005 · 25-07-2018 08:10PM

tcawley29 wrote: »

There shouldn't be any need to use force though.

When I put the right size extractor on the bolt with a few light taps of a hammer (i do mean light) it came off relatively easily.

That's the issue. If someone doesn't know what they are doing they can do major damage, even tightening the sump nut can cause damage. A suction pump will remove all the risk for a small chance of some sludge being left behind and 4+ litres of fresh oil will dilute it out.

tcawley29 · 25-07-2018 08:21PM

Del2005 wrote: »

That's the issue. If someone doesn't know what they are doing they can do major damage, even tightening the sump nut can cause damage. A suction pump will remove all the risk for a small chance of some sludge being left behind and 4+ litres of fresh oil will dilute it out.

Agreed with some people doing more harm than good alright but I suppose if they have a torque wrench for putting it back they should be good?

I just personally don't like the idea of any potential sludge but I'm just very critical like that.

Also you don't get the same fun of getting your hands dirty

colm_mcm · 25-07-2018 08:26PM

Try another garage who’ll use your oil?

25-07-2018 09:47PM

100e for a Ferrari oil change is a bargain

Interslice · 25-07-2018 10:10PM

The next size down 12 point socket/ring spanner or an imperial size might do it.

If you can tap that on with a hammer then heat the area around the plug with a small gas torch and it should come off.

Tap the spanner with the hammer rather than pulling on it.

Del2005 · 25-07-2018 10:24PM

tcawley29 wrote: »

Agreed with some people doing more harm than good alright but I suppose if they have a torque wrench for putting it back they should be good?

I just personally don't like the idea of any potential sludge but I'm just very critical like that.

Also you don't get the same fun of getting your hands dirty

I know I'm repeating myself but when I used the suction pump nothing came out of the sump when I pulled the plug, I have to jack my car up to change the filter so pulling the nut wasn't an issue. So if nothing came out of the hole in the sump after I sucked the oil out whatever sludge was left wouldn't have come out anyway, also with the pump you can move it around to get the residue.

How many home mechanics know to ask for another crush washer?

HakunaPatata · 26-07-2018 07:17AM

Interslice wrote: »

The next size down 12 point socket/ring spanner or an imperial size might do it.

If you can tap that on with a hammer then heat the area around the plug with a small gas torch and it should come off.

Tap the spanner with the hammer rather than pulling on it.

Exactly what I was gonna say. Heat with small torch (carefully) and then lightly hammer a socket of smaller size on. Was the only way I could get the upper strut mount nuts off my old mazda. Alternatively you can cut a small notch in the nut with a grinder and a couple of light taps with a chisel, she should pop right off leaving the threads (hopefully) intact. Second option is best left to someone with a bit of experience though. Bon voyage.

Doctors room ghost · 26-07-2018 07:28AM

If all else fails and there's one scrapped near you get the sump off it and put new gasket on it

cruizer101 · 26-07-2018 07:49AM

Honestly for all the effort if the garage will do it for 100 I'd go with that. That includes oil and filter which is gonna cost you at least 50ish quid anyway.

Doctors room ghost · 26-07-2018 04:58PM

OP did you see the coupe on done deal.cork I think it's in.15 k he spent modding it according to the add and by the looks of it a dog took a chunk out of the front.its in modded section.cant miss it.ive been having nightmares since looking at it

firstlight · 26-07-2018 06:18PM

If your handy with a hammer and a small chisel,you can create a small edge on the nut with chisel to get it started,the obvious thing is dont hit the sump,if you can cover it with something
Works a treat for me,buy a new nut from hyundai then
Up to yourself
From my own opinion you should always drain oil through the sump
Have the oil up to temp first,will run out with a better flow

jeepcj · 26-07-2018 06:25PM

Del2005 wrote: »

Buy an oil suction pump. First time I used mine we took the sump nut out and not a drop of oil came out, have a good look at the filter for metal fragments.

Much less messy than draining oil while lying on the ground.

All depends on the design of the sump, On my navara it sucked all of it out, on my pajero, 2 litres were left. My suggestion is if you are going to suck it out measure what you take out to make sure you get the majority of it.

tcawley29 · 26-07-2018 06:31PM

Del2005 wrote: »

I know I'm repeating myself but when I used the suction pump nothing came out of the sump when I pulled the plug, I have to jack my car up to change the filter so pulling the nut wasn't an issue. So if nothing came out of the hole in the sump after I sucked the oil out whatever sludge was left wouldn't have come out anyway, also with the pump you can move it around to get the residue.

How many home mechanics know to ask for another crush washer?

Is that not part of the reason to have the engine running for a while to heat the oil and allow easier drainage?

Funny enough I did know about the crush washer actually

StereoSound · 26-07-2018 06:58PM

I bought the electric pump as per my link. I'll still at a later stage replace the stripped sump nut though. I'm more curious about these oil extraction pumps to see how well they work. For €30 delivered and if it works OK I think it will be handy. Aren't high end garages doing oil changes this way these days? I'll have it in my hand tomorrow and I'll report back how well it works. I might make a video clip of it in action and post it here.

StereoSound · 27-07-2018 08:27PM

I pumped out my old oil this evening.... Worked great! I'll probably never bother undoing a drain nut again. I was very amused, It sucked out just over 3 litres before the hose ran dry. NICE! .Took about 5 minutes to complete the transfer into an old bucket. Fantastic stuff altogether! However the electric motor in it is a noisy little bugger. Still only have to use it twice or three times a year. €30 well spent I say.

Oil drain nut stripped

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