Gasket sealant ?
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Senior User
Joined: Jan 2008
Posts: 373
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From: Hudson Valley, NY
putting back together a 5.0L - everything except the heads, which are already torqued down .. just a 'routine rebuild' question .. I have a rubber, one piece oil pan gasket that I know should go on dry, but do I use sealant on ALL paper type gaskets?
Thread Starter
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Senior User
Joined: Jan 2008
Posts: 373
Likes: 1
From: Hudson Valley, NY
what's the diff between RTV and regular permatex #2 "form a gasket sealant", and the 'high tack' stuff for that matter?
hate to be a nuisance, but would like to get it right the first time ..
Mountain Pass
Joined: Aug 2004
Posts: 162
Likes: 0
From: Roswell, GA
I usually use Red Permatex for waterpumps, intakes, timing covers, etc. Has worked very well on my '95 truck (over 70K+ miles) a 5.0 Mustang engine that I built a few years ago, various Volkswagens, and friend's stuff.
When I resealed the 351W on the '84 truck a few weekends ago, I used Ultra Black Permatex on everything because the engine is a supreme piece of junk. Ultra Black is supposed to have maximum oil resistance and pretty strong adhesion. So far, it has held up pretty well, sealing up a motor with a lot of blow-by and that was leaking out of every orifice.
Also - I replaced the oil pan gasket on my '95 with a one-piece rubber one years ago, but I cant remember if i used any silicone sealant or not. Do the instructions say not to? Whatever I did has worked for about 40-50K miles, so I would probably recommend following whatever came with the seal.
When I resealed the 351W on the '84 truck a few weekends ago, I used Ultra Black Permatex on everything because the engine is a supreme piece of junk. Ultra Black is supposed to have maximum oil resistance and pretty strong adhesion. So far, it has held up pretty well, sealing up a motor with a lot of blow-by and that was leaking out of every orifice.
Also - I replaced the oil pan gasket on my '95 with a one-piece rubber one years ago, but I cant remember if i used any silicone sealant or not. Do the instructions say not to? Whatever I did has worked for about 40-50K miles, so I would probably recommend following whatever came with the seal.
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Gigemags05
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
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Dec 21, 2014 10:31 AM
