Hello to all recently I had the diagnosis of the broken head seal after which I had all the materials and tools together I started to disassemble the motor after a short time was clear seal is not broken compression is also there but strong covering on the valve lid. everything made clean oil change made everything reassembled all tip top. now after 3 weeks again oil sludge on the lid where does this come from? water he also consumes against but no water in the oil.