which steel tubing for mechanical oil sensor

[turpentyne]

We discovered yet another thing the shop screwed up. They snipped off the metal tube for the (perfectly good) mechanical oil sensor, and threw on an electrical one that isn't even wired correctly.

So, I want to put a new line back in. I've found all the correct fittings, and it looks most people are replacing with copper lines, but I'd rather use stainless steel so it's as durable as the original.

I know it's a 1/8" line, but I'm looking at Grainger and seeing several options and not quite sure which one is the best choice. I'm assuming 1/8 is the outer diameter, but I don't know pressure, etc. to choose. Maybe somebody else has done this and found just the right thing.

Here's the page I'm looking at: https://www.grainger.com/category/pl...&filters=attrs