How long until an oil leak appears???? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

OUbesto · 06-18-2018, 12:35 PM

I just installed new FelPro #1635 silicone valve cover gaskets. I called the FelPro Customer service rep and asked about installation suggestions etc. He said do not use any type of adhesive, sealant etc....just put 'em in bareback! So that's what I did! After reading many of the forum posts, I only tightened the bolts using a nut driver with not much more than a wrist turn snug. Once done, I started engine and let run for about fifteen minutes and could not see any leaks....VOILA!

But my question is how long do I have to wait to truly know if these pretty expensive silicone gaskets are not going to leak? Do you know right away? Is it something that might take a few hours of running time etc??? Any comments?

06-18-2018, 12:35 PM	#1
OUbesto Registered User Join Date: Oct 2015 Location: Lincolnshire, IL / Burlington, WI Posts: 209	How long until an oil leak appears???? I just installed new FelPro #1635 silicone valve cover gaskets. I called the FelPro Customer service rep and asked about installation suggestions etc. He said do not use any type of adhesive, sealant etc....just put 'em in bareback! So that's what I did! After reading many of the forum posts, I only tightened the bolts using a nut driver with not much more than a wrist turn snug. Once done, I started engine and let run for about fifteen minutes and could not see any leaks....VOILA! But my question is how long do I have to wait to truly know if these pretty expensive silicone gaskets are not going to leak? Do you know right away? Is it something that might take a few hours of running time etc??? Any comments? __________________ 1970 C-10 CST, LWB, 402/400, A/C



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.