So, I am currently working on my bike. I've been advised to use Loctite 518 to reassemble side covers etc, as it is designed to only set when applied and in the joint. Its anaerobic, so sets in the absence of air.

This eliminates the risk of a blob on the inside breaking off and causing mayhem. Anything left inside is dissolved in the oil.

Is there any reason to not use this product in place of RTV on Discos? Or any other vehicle engine for that matter. Is RTV just an out dated product?

 

I'm old school, still use gaskets and Hylomar blue.

 

It can really only be used on a flange that's meant for that sealant. The tolerances are extremely tight, and a gap as small as 0.25mm will result in the sealant never curing, and eventually leaking whatever fluid it's holding back.

I use it specifically to seal the case halves of the transmission on my SHO, the Ford MTX-IV. A large enough nick on the flange will result in a transmission that will never be totally sealed.

 

Ah. Ok.

0.25mm is actually a sizable gap when it comes to mating surfaces.

I can really see the danger of bits of errant RTV floating around. But then again I've always been meticulous about applying that kind of thing.

I also used to use Blue Hylomar, back in the UK. That had some kind of pressure related properties I remember. Harder it was squeezed better the seal, or something.