The ultra grey is rated to 625*F, the ultra black is good to 500*F. The Grey is rigid, or a bit stiffer. Both have a cure time of approx 24 hours. I say, FORGET IT!
RIGHT STUFF comes in Ultra Black, and Grey, and has a 5 min cure time. I've used it on a ton of cars and never 1 leak. Even with bent up oil pan flanges on beater cars. Last year this time my wife's car was leaking oil. I took the oil pan off the GA16, scraped off the old stuff, put some right stuff black on the pan, bolted it on. IMMEDIATELY filled with oil, and went out to dinner.
It's been a year, and it is holding up freakin' incredible. I didn't have to cure it. I am now using it in all my projects. From my transmission builds, to various projects. It's in a cheese-whiz can so you don't have to hurt yourself squeezing a tube.
Seriously... RIGHT STUFF FTW
/Thread. lol
RIGHT STUFF comes in Ultra Black, and Grey, and has a 5 min cure time. I've used it on a ton of cars and never 1 leak. Even with bent up oil pan flanges on beater cars. Last year this time my wife's car was leaking oil. I took the oil pan off the GA16, scraped off the old stuff, put some right stuff black on the pan, bolted it on. IMMEDIATELY filled with oil, and went out to dinner.
It's been a year, and it is holding up freakin' incredible. I didn't have to cure it. I am now using it in all my projects. From my transmission builds, to various projects. It's in a cheese-whiz can so you don't have to hurt yourself squeezing a tube.
Seriously... RIGHT STUFF FTW
/Thread. lol