Replacing core plugs, which sealant?

[Big Rig]

Been told to use a smear of permatex when refitting. Can anyone advise?


Permatex 81160 High-Temp Red RTV Silicone Gasket, 3 oz https://www.amazon.co.uk/dp/B0002UEN1A/ref=cm_sw_r...

[tr7v8]

All my engine building I have used a smear of slow setting araldite. I have never had one leak or more importantly come loose. U forget where this came from probably a well known builder in the 70's; Dave Vizard or similar.

[Big Rig]

Got a link for that stuff buddy?

[tr7v8]

Big Rig said:

Got a link for that stuff buddy?

What Araldite?
https://www.amazon.co.uk/Araldite-Ultra-Strong-Adh...

[E-bmw]

Only 1 I have ever replaced, I was told to use nothing (as they has a lead coating to make a seal) & it certainly lasted more than the 3 years I had the car.

Edited by E-bmw on Friday 4th February 10:18

[Boosted LS1]

Something modern like Elring Dirko is designed for jobs like this.

"Resistant to oil , grease, coolant, UV radiation, cold and hot water, salt water, detergents, weak acids and lyes, etc. Possible applications, valve cover, oil pan, water and oil pump, differential housing, gearbox, gear oil sump, thermostat housing, control housing, shaft cover, flanged connection, headlamp, tail light, battery compartment, etc".

Edited by Boosted LS1 on Thursday 3rd February 21:11