RadBOSS
Well-Known Member
- Joined
- Apr 30, 2016
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- 2
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- 159
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- Location
- Paso Robles, CA
- Vehicle(s)
- 69 BOSS302, 29 Model A Roadster
That is a mystery. I can't see where there is a negative impact. Maybe FORD uses different elastomer that does not like oil on the face.If I follow these instructions, the next time I change my oil, I will not be putting a little fresh oil on the o-ring for the 1st time in my life. I am not sure I am capable of this?
Any ideas why they would recommend not lubricating the o-ring?
The other possibility since Ford may be anal about this is, smearing the gasket with oil changes the relationship between torque and preload.
Looking at a fastener torqued to a specified value will produce a specific preload.
If you take the same fastener, apply a lubricant, and apply the same torque, the preload will be higher. Different lubricants would yield different results.
While the filter gasket is not a fastener, in this application it behalves like one depending how much the filter housing gets preloaded for a specific torque.