cant find any hylomar anywhere. ive been told i can use small amounts of silicone instead. any place that might sell hylomar that i havent checked ie all autopart stores. would i be ok with silicone ?

 

I thought mazdatrix sold hylomar?

Also, Hylomar is polyurethane based sealant, not silicone based. I personally wouldn't use silicone at all.

 

was hopping to not have to order it

 

There's no reason to use Hylomar. in its current form (I heard it used to be different back in the day) it gets very sticky very quickly and is a pain to apply. Get some Crisco (the blue tin) and use that to hold in your coolant seals.

 

wow havent heard that one before. other opinions???

 

full thread on it https://www.rx7club.com/rotary-car-performance-77/possible-hylomar-replacement-746543/

again I tried hylomar but I didn't like it

 

Yeah, the "Hylomar" sold now sucks compared to the good stuff. Luckily, I have like 20 tubes of the good stuff which I bought when I heard rumors of its demise.

Anyway, Vaseline is an acceptable substitute. Mainly the Hylomar just holds stuff in place. If you have pitted areas you need to seal, then a very light coating of RTV or another non-hardening sealant (aircraft sealant) will work.

 

dam you ^ haha i think im going to go with a light coat of rtv black

 

I like the Crisco because it's the easiest to clean up

 

Hmmm...we'll see how my engine, put together with new hylomar, holds up

 

probably smells great when first fired up too

 

It will be fine. The real difference is that the new stuff is a pain in the *** to work with. I don't think it's functionally different in any significant way. I've so far done two engines with the new stuff and they are both fine.