Re: Valve cover leak...
Originally Posted by
harbor
Guys, so Permatex Ultra Black Gasket Maker is the RTV sealant of choice?
Need to do mine soon and would like to do it only once. Already got the bolts from Rob.
Thanks in advance.
Originally Posted by
LVXF
It was for me. Black tube says for maximum oil resistance and ultra-grey says for max torque and temp. Chemical compositions are different but forum members have had success with both.
From my perspective, both products are well suited for this application. If you look up the products on the Permatex website, you'll find the following applications listed under Automotive:
Suggested Applications: Valve covers, oil pans, transmission pans (Ultra-Grey), intake manifold end seals, timing covers, water pumps (Ultra-Grey), thermostat housings (Ultra-Grey), differential covers (Ultra-Black)"
The operating tempature range (-65F to 500F) is identical for both products. You probably would achieve a good seal using either of these products. But to the original question, the consensus amongst the Forum Members is the Ultra-Black product. I personally used the Ultra-Grey product with excellent results to-date.
Technique & procedure is a major contributor to the success of this repair. And we all agree on that point.
Good luck with your repair.
Last edited by dedwards0323; Apr 27, 2015 at 10:23 PM.