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Message: <blockquote data-quote="oleg1981" data-source="post: 8957" data-attributes="member: 264">i know that older 3.4 was efected by dexcool cooland! as the gasket was not adopted to it. but we have newer 3.4 with different intake system. i heard about that some of noxes steel surfers from head gasket leaking. but its pretty easy job to change DIY. the real problem is the upper intake gasket. its pretty common to leak oil to intake manifold.i'v changed my coolant before winter. its easy DIY. the hardest is to get out air from system.</blockquote>