Check this stuff out guys
http://www.permatex.com/products/product-categories/gasketing/gasket-sealants/permatex-form-a-gasket-no-2-sealant-detail
"Slow-drying, non-hardening brush-top sealant approved for use in aviation as well as automotive applications. Temperature range -65°F to 400°F (-54°C to 204°C); resists gasoline, oil and grease. - See more at: http://www.permatex.com/products/product-categories/gasketing/gasket-sealants/permatex-form-a-gasket-no-2-sealant"
Suggested Applications: Valve cover gaskets, oil pan gaskets