i use both,,the rite stuff is real touchy,,if both surfaces are not wiped doen real good it wont stick were as the ultra will. i wont use the rite stuff on diff or oil pans and valve covers..the thin metal bends out of shape when taking it apart..

funny you say that the right stuff wont stick to oiley surface,i have found it to stick in greasy,oiley surfaces much better than any other sealer,maybe im just lucky.

Sounds like we have a lot of differing opinions on what stuff to use, what works best, etc. Likely that there are several ways to skin this cat. I appreciate all of the opinions, and I apologize to ICD for taking this thread in a totally different direction. Probably should have started a separate one. I might have to do that when I report my results. Hopefully I'll have an answer for us tomorrow.

Uhhh I've seen many bent and twisted oil pan and differential covers from rtv. But that's whatever. I like the right stuff because its easy to use you can lay down a very controlled and nice bead. As far as Bud's situation what I've learned from years of use with sealants is its important to have a relatively clean surface doesn't have to be perfect and I think more important is buying a product that hasn't been sitting on a shelf for a long time. When I buy sealants and what not I go to high volume stores that the product gets rotated. The stuff does go bad sitting on the shelf. If I pick up a package and it has any dust on it or looks faded it goes back on the shelf.

Right stuff is an anaerobic sealer which will cure without the presence of air. Rtv needs air to cure (aerobic). I too have found right stuff to work better than rtv where the surface may have some oil residue . Right stuff is more along the lines of ultra Grey or ultra copper, just better imo. I don't use sealants that smell like vinegar too much anymore.

There's gasket makers, and gasket sealers. Using a sealer to replace a gasket, doesn't work well.

The Right Stuff is the devils snot. I have broken a few pry bars and screw driver tips trying to remove intakes and other things bonded with it. The stuff flat out seals and works.

Hmmm, was planning to use it on my intake - hopefully I will never have to take it off, or it sounds like it might be coming off in pieces.

How long does it need to set up? It says on the packaging that you can put the parts back into service almost immediately, but the little bit left on the end of the tube still seems soft and pliable, like it's not all the way set up. It's been about two hours.

When I first got my boat my bilge used to look like a Murder scene with oil leaks... I never thought Right Stuff would seal it from the OUTSIDE.. but I goobed it on and no more leaks.. I was pretty impressed.


No set up..Budman.. just use it

it works gr8 on intake manifolds and i do use allot of it,,i just dont use it on thin sheet metal parts because it wont come loose too easy and you will bend the s hit out of the sheet metal its atached to...i never had ant leaks with ultra either if both surfaces are cleaned properly and have no left over grease film..