Blown crank seal. Replacing it may not be a permanent fix. the bore for the race on the timken bearing may be too tight, causing the bearing to over heat and destroy the seal. I went through a shitload of seals before figuring this out.

Anyway, the sensors are not at fault. They are doing exactly what they're supposed to do. Oil is dumping into the primary. Engine is running hot so the head temp sensor tells the ECM to add more fuel to cool things down. Will foul the O2 sensor shortly too. Just a chain reaction...

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Bob Krzeszkiewicz
2012 XR1200X - 2011 Kawasaki Z1000SX - 1999 Buell X1

But surely if the crank seals blown the engine oil level would be dropping not increasing

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2001 X1 2009 1125CR 2006 Uly X3 2010 Uly a fully Maz'd S1 and a 1991 RS1200 Westwind.