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Whynns oil leak stopper additive
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cmb2020
 


Member Since: 08 Sep 2020
Location: Buckley, North Wales
Posts: 1150

United Kingdom 2005 Discovery 3 TDV6 SE Manual Aintree GreenDiscovery 3
Whynns oil leak stopper additive

Hi all

Long time!

Just a quick one

I used that pop can shaped additive from Halfords about 5 months ago to stop a slight oil leak. I poured it in to the engine oil cap as directed.

However I saw a post on Facebook yesterday saying it’s bad stuff and expands the seals causing serious damage to the engine and people must not use it

I thought I’d ask here for some professional opinions rather than on threads as they seem to be less formal and informative people on them. But I’m concerned about my car now paranoid and wanting to know what’s what

Any help appreciated

Tia as always Disco 3 SE Manual 2005 V6 2.7
Buckley, North Wales  
Post #228503224th Mar 2022 11:23 pm
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Hardware
 


Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 12872

United Kingdom 2011 Discovery 4 3.0 SDV6 XS Auto Sumatra BlackDiscovery 4

there are posts on FB that say there is no war in Ukraine. just sayin'.



Wynns wouldn't have made the stuff for decades if it didn't work ... but you have to look at your own individual case and decide "the risks". It works by making your oil go thicker than intended so it plugs small holes. but your engine works because it can push oil through small holes under pressure.

It's the places where pressure is low this stuff is meant to work ...

If your engine hasn't died so far, it was probably ok in your case.


this argument was "aided" by copious amounts of VC, none of which was treated by Wynns.  
Post #228503324th Mar 2022 11:45 pm
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cmb2020
 


Member Since: 08 Sep 2020
Location: Buckley, North Wales
Posts: 1150

United Kingdom 2005 Discovery 3 TDV6 SE Manual Aintree GreenDiscovery 3

Cheers!

Yeah I take Facebook with a pinch of salt!

And I’m coincidentally doing oil and filter tomorrow so all good!

Thanks again Disco 3 SE Manual 2005 V6 2.7
Buckley, North Wales  
Post #228503524th Mar 2022 11:53 pm
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lynalldiscovery
 


Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274

United Kingdom 2006 Discovery 3 TDV6 Metropolis LE Auto Bonatti GreyDiscovery 3

I have been told some brake fluid has the same effect!  
Post #228506325th Mar 2022 8:02 am
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3disco
 


Member Since: 23 Sep 2010
Location: devon chardstock
Posts: 504

I thought it reconditioned the seals or softening them slightly to form a better seal.  
Post #228512925th Mar 2022 9:00 pm
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