Hello, could someone tell me what this oil leak is? I cant find anything ab it and I would like to fix it. Btw its the little cover behind the idler pulley tensioner. Its soaked

 

I think its the oil pressure sensor, or the oil temp sensor. I believe that there are 3 oil sensors, 1 is behind the pulley on the block and 2 are down low between the oil filter and oil pan. Hope that helps,but my guess its the FIRST ONE. GOOD LUCK