Lucas transmission fix - any experience?

[KKson]

Hi all, I've got a new rear oil seal ready for fitting on Monday but from previous advice fitting new seals to the diff is not quite so easy due to the pre-load. My local garage has suggested trying Lucas transmission fix. It sounds clever stuff but would it be detrimental in the PowerLok diff? Has anyone ever tried it? Cheers.

http://lucasoil.com/products/transmission-products...

[KKson]

Okay I'll avoid. Seal rebuild kit on the way from ML Performance.