Help Support

Magnetic drain plugs

Post here for mechanical and engine topics such as fuel issues, transmission problems, rough idle, exhaust, electrical issues, etc

Moderators: ron, bfons, GRNSHRK

Post Reply
Platinum Member
Platinum Member
Posts: 3007
Joined: Thu Apr 08, 2004 3:24 pm
Location: Gilroy (SF Bay Area) CA

Magnetic drain plugs

Post by GRNSHRK » Sat Dec 19, 2020 9:21 pm

So, while the 6er is up on jack stands, I'm taking the opportunity to take care of some maintenance underneath, replacing the reverse light switch being one of the tasks that needed to be performed :-k

Well, what a PITA that job is, had to remove the clutch slave cylinder to install the replacement ](*,)

But one thing that I noticed was that the drain plugs for both the tranny and diff have magnets built into them, but the oil drain plug doesn't :-?

I replaced mine with a magnetic version eons ago, but the question that comes to mind is why BMW didn't use a magnet on the oil drain plug, but did in other locations :-"

My guess is that while BMW makes the engines (shit, our middle name is motor :roll: ) but doesn't make the transmissions or differentials, Getrag comes to mind in the case of the tranny, not sure who makes the diffs [-(

Thinking that these manufacturers were smart enough to use them, but BMW was not :shock:

I know, hard to believe, curious what you guys think \:D/
1980 633 CSi Cypress Green/Pearl Beige
2017 X5 M Sport Xdrive 35i Carbon Black/Ivory White
2005 330 Ci ZHP Cabrio Imola Red/Bone/Black

User avatar
Ralph in Socal
Platinum Member
Platinum Member
Posts: 2416
Joined: Tue Apr 14, 2009 3:32 am
Location: High Desert of SoCal

Re: Magnetic drain plugs

Post by Ralph in Socal » Sat Dec 19, 2020 9:35 pm

Filtration and more frequent changes can support the lack of a magnetic drain plug. I would still suggest it though I don’t have it in any of my vehicles (YET). They are not cheap and I am.

There is a very fine line between "Hobby" and Mental Illness.

85 635csi Zinno Auto
84 528i Euro
83 635 Euro Arktik
81 528i Kastanien 5-speed
88 528e Bronzit (Granpa Car)
86 535i Auto (For Sale)
81 633 csi (retired)

User avatar
Platinum Member
Platinum Member
Posts: 727
Joined: Mon Apr 02, 2007 10:08 pm
Location: West Nyack, NY

Re: Magnetic drain plugs

Post by 86_6series » Sat Dec 19, 2020 11:49 pm

I use magnets on the drain plugs from an old hard drive.

Bigcoupe 100 Post club
Posts: 213
Joined: Mon Jan 23, 2012 7:08 am
Location: Monterey CA

Re: Magnetic drain plugs

Post by 88m6 » Tue Dec 22, 2020 3:06 am

I have them in all six of my BMW 's.
Can't hurt. :roll:
Saw someone stuck few magnets around outside of pan. That should work too I'd assume.
After I saw that put a couple around my power steering canister. Can't hurt :roll:

Platinum Member
Platinum Member
Posts: 1518
Joined: Mon Jul 16, 2007 2:58 pm
Location: Cheltenham, U.K.

Re: Magnetic drain plugs

Post by wattsmonkey » Mon Feb 22, 2021 2:41 pm

Like the above, it's rare earth magnets from hard drive for me - including one in the PS reservoir.
"Most of it necessary; all of it enjoyable." LJKS
'84 635CSi, dogleg...itbs and supercharger????? Eaton Mess

Platinum Member
Platinum Member
Posts: 1314
Joined: Thu Sep 13, 2012 1:47 pm
Location: Ireland

Re: Magnetic drain plugs

Post by olympia57 » Mon Feb 22, 2021 4:29 pm

Yep ,As been said .
A couple of neodyiam magnets on the oil filter casing and sump .
1981 635 series 1

Post Reply

Who is online

Users browsing this forum: No registered users and 34 guests