I recently rebuilt a MZ ts 125, using my old favourite Hylomar Blue,for sealing the crankcases. I found the consistancy has changed, not to my liking, not so ‘sticky’ anymore. I recently viewed an etz 125/150 engine rebuilt on U-tube (very usefull!!), they use a liquid substance,what you brush on. I have tried to find a similar product,I found ‘HELDITE jointing compound, has anyone used this, and is it similar to what MZ used? Maybe anyone can sugest what to get/use. The ts 150 I got now seems to be sealed with red hermetite, what is not petrol resistant I think, so has to be done.Thanks, Ruud.
I always use Wellseal which you apply with a paint brush. http://www.wellseal.co.uk/ is the website but I think you have to get it on ebay as unless you want a million gallons of it the company don’t supply it but I suppose its worth a call.Good luck!