Originally Posted by Aimstraight
Ah yes, plumping up the seals is supposedly one of it's properties (I'm not sure how it actually does that though).
As you say quite a few use alternatives, folk seem to have their own favourite 30W oil - and get along fine with it
From a car forum
How does it work? White Shepherd Oil Stop Leak works while you drive. White Shepherd absorbs into the seal to soften, expand & revitalize the size and flexibility to its original condition.
How large of a leak does it repair? White Shepherd will seal leaks in any fluid systems that are seeping or dripping
seal soaked in white shepherd https://landroverforums.com/forum/at...len_o-ring.jpg
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