I agree with Jack. Trash the plastic line. I had one on an aftermarket gauge installed in a F*** used to own, it broke one day while I was driving. If I hadn't noticed it, I would have ruined the engine. Bleed the air out of the line, I cracked the line loose at the back of the gauge while the engine was running, watched the oil approach, then tightend the line. Electric gauges are more expensive, but worth the peace of mind
