158k - oil pan gasket blew. Took to NTB - first gasket failed. Installed 24 HR gasket and upon the 10 minute idle seal they say truck started sounding like a diesel. I drove .7 mile home and stalled 4 times and the engine light came on. Manager came over and got P0115 ect circuit code. I showed him oil is barely touching dipstick and he swears he say his tech fill my engine and that he doubled checked level to be at 2:nd dot on stick. Engine sounded great prior to gasket change. What can be wrong?