LN magnetic oil plug failure and oil question
08-14-2018, 11:46 PM
#31
Let me just add that this thread is not an open invitation for people to email asking for new drain plugs for free because they want the new version. If you have a legit problem that isn't normal wear and tear, I'm happy to replace drain plugs, but no drain plug is a forever item. Just want to make that perfectly clear as several people have emailing thinking they are entitled to free stuff just because.
08-15-2018, 11:06 AM
#32
Rennlist Member
Amazing!
08-15-2018, 11:20 AM
#33
08-15-2018, 11:32 AM
#34
With magnetic drain plugs my concern is always that if the magnet shatters for any reason, or if it slips out of the the aluminum housing, you now have an entire magnet or bits of magnet in your sump. Are the magnets bonded into the aluminum plugs? Or press fit? Just seems like there is a (admittedly small) chance that the magnet could break or come loose and get into your oil supply. Seems to me it would be better to have the magnet on the outside of the plug, embedded in the bottom of a pocket from the outside rather than stuck in the tip of the plug. That way if it breaks or comes loose from the plug, it just falls on the ground.
08-15-2018, 11:49 AM
#35
Rennlist Member
With magnetic drain plugs my concern is always that if the magnet shatters for any reason, or if it slips out of the the aluminum housing, you now have an entire magnet or bits of magnet in your sump. Are the magnets bonded into the aluminum plugs? Or press fit? Just seems like there is a (admittedly small) chance that the magnet could break or come loose and get into your oil supply. Seems to me it would be better to have the magnet on the outside of the plug, embedded in the bottom of a pocket from the outside rather than stuck in the tip of the plug. That way if it breaks or comes loose from the plug, it just falls on the ground.
08-15-2018, 12:35 PM
#36
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I've had my L&N Magnetic Plug since early 2014. Have had over 11 oil changes on the same plug. Works perfect every time. Thanks, Charles.
08-15-2018, 01:42 PM
#37
Former Vendor
When properly installed, and torqued these plugs work great.
Every engine we have built since 2008 has received one of these as standard equipment. Of those we’ve had one failure, which was admittedly the user’s fault... He didn’t know “lefty loosey” and ended up tightening his drain plug instead of loosening it. he was one of those guys that made it a monumental effort to “change his own oil”... He exerted over 100Ft/lb of torque on the plug, and broke the hex tool....
That didn’t stop him. He replaced the tool and went back at it, before he finally called us when the plug failed to complain about how we had “over- torqued” his drain plug, and now it was impossible to remove. He destroyed his sump plate in the process. When Jake told him that he’d been tightening the plug, rather than loosening it, the voice on the other end of the phone went really quiet..
Yes, he was a member of this forum, and an Engineer. #truestory
Every engine we have built since 2008 has received one of these as standard equipment. Of those we’ve had one failure, which was admittedly the user’s fault... He didn’t know “lefty loosey” and ended up tightening his drain plug instead of loosening it. he was one of those guys that made it a monumental effort to “change his own oil”... He exerted over 100Ft/lb of torque on the plug, and broke the hex tool....
That didn’t stop him. He replaced the tool and went back at it, before he finally called us when the plug failed to complain about how we had “over- torqued” his drain plug, and now it was impossible to remove. He destroyed his sump plate in the process. When Jake told him that he’d been tightening the plug, rather than loosening it, the voice on the other end of the phone went really quiet..
Yes, he was a member of this forum, and an Engineer. #truestory
08-15-2018, 02:07 PM
#38
Rennlist Member
When properly installed, and torqued these plugs work great.
Every engine we have built since 2008 has received one of these as standard equipment. Of those we’ve had one failure, which was admittedly the user’s fault... He didn’t know “lefty loosey” and ended up tightening his drain plug instead of loosening it. he was one of those guys that made it a monumental effort to “change his own oil”... He exerted over 100Ft/lb of torque on the plug, and broke the hex tool....
That didn’t stop him. He replaced the tool and went back at it, before he finally called us when the plug failed to complain about how we had “over- torqued” his drain plug, and now it was impossible to remove. He destroyed his sump plate in the process. When Jake told him that he’d been tightening the plug, rather than loosening it, the voice on the other end of the phone went really quiet..
Yes, he was a member of this forum, and an Engineer. #truestory
Every engine we have built since 2008 has received one of these as standard equipment. Of those we’ve had one failure, which was admittedly the user’s fault... He didn’t know “lefty loosey” and ended up tightening his drain plug instead of loosening it. he was one of those guys that made it a monumental effort to “change his own oil”... He exerted over 100Ft/lb of torque on the plug, and broke the hex tool....
That didn’t stop him. He replaced the tool and went back at it, before he finally called us when the plug failed to complain about how we had “over- torqued” his drain plug, and now it was impossible to remove. He destroyed his sump plate in the process. When Jake told him that he’d been tightening the plug, rather than loosening it, the voice on the other end of the phone went really quiet..
Yes, he was a member of this forum, and an Engineer. #truestory
^^This^^ is classic! Oh well, we all screw up from time to time 
08-15-2018, 03:11 PM
#39
I used to worry that 19 ft/lb would be a little on the loose side as the stock setup was around 37 ft/lb. Then I use the same for the oil filter canister as it says 25n/m which is pretty close to 19 ft/lb.
I've always used a fresh crush washer and never had a leak.
Speaking of messing up a routine job. I was changing the rear diff fluid on an 98 M3. The torque for the drain and fill plugs was listed in the Bentley manual as 46 ft/lb. I set my torque wrench to 46 and proceeded to re-install the drain plug, I guess all the heat cycles had weakened the metal on the diff back plate as a large chunk of metal holding the drain plug just broke off. At first I thought I needed a new diff, but really is was just the back plate and a gasket ($120).
Anything that can go wrong will. To this day I am very good about using a the proper torque and expecting parts to have weakened over time.
I've always used a fresh crush washer and never had a leak.
Speaking of messing up a routine job. I was changing the rear diff fluid on an 98 M3. The torque for the drain and fill plugs was listed in the Bentley manual as 46 ft/lb. I set my torque wrench to 46 and proceeded to re-install the drain plug, I guess all the heat cycles had weakened the metal on the diff back plate as a large chunk of metal holding the drain plug just broke off. At first I thought I needed a new diff, but really is was just the back plate and a gasket ($120).
Anything that can go wrong will. To this day I am very good about using a the proper torque and expecting parts to have weakened over time.
08-15-2018, 09:31 PM
#41
Rennlist Member
When properly installed, and torqued these plugs work great.
Every engine we have built since 2008 has received one of these as standard equipment. Of those we’ve had one failure, which was admittedly the user’s fault... He didn’t know “lefty loosey” and ended up tightening his drain plug instead of loosening it. he was one of those guys that made it a monumental effort to “change his own oil”... He exerted over 100Ft/lb of torque on the plug, and broke the hex tool....
That didn’t stop him. He replaced the tool and went back at it, before he finally called us when the plug failed to complain about how we had “over- torqued” his drain plug, and now it was impossible to remove. He destroyed his sump plate in the process. When Jake told him that he’d been tightening the plug, rather than loosening it, the voice on the other end of the phone went really quiet..
Yes, he was a member of this forum, and an Engineer. #truestory
Every engine we have built since 2008 has received one of these as standard equipment. Of those we’ve had one failure, which was admittedly the user’s fault... He didn’t know “lefty loosey” and ended up tightening his drain plug instead of loosening it. he was one of those guys that made it a monumental effort to “change his own oil”... He exerted over 100Ft/lb of torque on the plug, and broke the hex tool....
That didn’t stop him. He replaced the tool and went back at it, before he finally called us when the plug failed to complain about how we had “over- torqued” his drain plug, and now it was impossible to remove. He destroyed his sump plate in the process. When Jake told him that he’d been tightening the plug, rather than loosening it, the voice on the other end of the phone went really quiet..
Yes, he was a member of this forum, and an Engineer. #truestory
08-16-2018, 12:30 AM
#42
+996 I have to go over it a few times in my head to make sure when I'm underneath. I've had mine since 2010 without issue.
08-16-2018, 02:59 PM
#43
I've read about magnetic oil plug for years. Very controversial subject matter. Seems like Porsche used to put them on their aircooled cars from the factory, right? Why did they stop?
08-16-2018, 06:40 PM
#44
Addict
Rennlist Member
Rennlist Member
When properly installed, and torqued these plugs work great.
Every engine we have built since 2008 has received one of these as standard equipment. Of those we’ve had one failure, which was admittedly the user’s fault... He didn’t know “lefty loosey” and ended up tightening his drain plug instead of loosening it. he was one of those guys that made it a monumental effort to “change his own oil”... He exerted over 100Ft/lb of torque on the plug, and broke the hex tool....
That didn’t stop him. He replaced the tool and went back at it, before he finally called us when the plug failed to complain about how we had “over- torqued” his drain plug, and now it was impossible to remove. He destroyed his sump plate in the process. When Jake told him that he’d been tightening the plug, rather than loosening it, the voice on the other end of the phone went really quiet..
Yes, he was a member of this forum, and an Engineer. #truestory
Every engine we have built since 2008 has received one of these as standard equipment. Of those we’ve had one failure, which was admittedly the user’s fault... He didn’t know “lefty loosey” and ended up tightening his drain plug instead of loosening it. he was one of those guys that made it a monumental effort to “change his own oil”... He exerted over 100Ft/lb of torque on the plug, and broke the hex tool....
That didn’t stop him. He replaced the tool and went back at it, before he finally called us when the plug failed to complain about how we had “over- torqued” his drain plug, and now it was impossible to remove. He destroyed his sump plate in the process. When Jake told him that he’d been tightening the plug, rather than loosening it, the voice on the other end of the phone went really quiet..
Yes, he was a member of this forum, and an Engineer. #truestory
