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E36 M3 (1992-1999) {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999


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Old Thu, Mar-09-2017, 07:38:51 PM   #1
NolliM3
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Default WD40 Killed Idler Pulley

So, I fixed my oil leak by replacing the o-rings in the oil filter housing (some call it the freeze plug)...while putting back the components, for some silly no reasons I decided to spray WD40 on the idler pulley although there was no problem...now the idler pulley squeaks.

DON'T spray WD40 on idler pulley EVER!
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Old Fri, Mar-10-2017, 06:42:16 AM   #2
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Default Re: WD40 Killed Idler Pulley

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Old Fri, Mar-10-2017, 01:20:13 PM   #3
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Default Re: WD40 Killed Idler Pulley

lol.
WD40 is a water displacement chemical.
It also is damaging to rubber.
No worries.You can repack the pulleys with high speed grease as long as there is no rust in the bearings. and don't have 150k miles of running.
They have ball bearings in 'em.
m
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Old Fri, Mar-10-2017, 03:06:07 PM   #4
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Default Re: WD40 Killed Idler Pulley

Quote:
Originally Posted by NolliM3 View Post
So, I fixed my oil leak by replacing the o-rings in the oil filter housing (some call it the freeze plug)...while putting back the components, for some silly no reasons I decided to spray WD40 on the idler pulley although there was no problem...now the idler pulley squeaks.

DON'T spray WD40 on idler pulley EVER!
Allow me to expand your point: WD40 should not be used on any part of the car. There is a significantly better product for every use case.
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Old Fri, Mar-10-2017, 03:44:33 PM   #5
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Default Re: WD40 Killed Idler Pulley

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Originally Posted by Obioban View Post
Allow me to expand your point: WD40 should not be used on any part of the car. There is a significantly better product for every use case.
This. I have a small shelving unit full of different lubricants/sprays/penetrating oils/fluids/etc. in my garage. Not a single one of them is WD40.
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Old Fri, Mar-10-2017, 04:17:51 PM   #6
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Old Fri, Mar-10-2017, 04:23:18 PM   #7
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Old Fri, Mar-10-2017, 06:03:27 PM   #8
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Default Re: WD40 Killed Idler Pulley

Bring it!




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Old Fri, Mar-10-2017, 06:24:55 PM   #9
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Default Re: WD40 Killed Idler Pulley

I use WD-40 to set things on fire, and that's about it.
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Old Fri, Mar-10-2017, 07:13:05 PM   #10
NolliM3
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Default Re: WD40 Killed Idler Pulley

LOL...thanks guys for the humor...lesson learned. Bought a new idler pulley...it's on its way...for the car has 184K and the idler pulley could have been the original.
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Discussing WD40 Killed Idler Pulley in the E36 M3 (1992-1999) Forum - {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999 at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)