Dont ever test run a motor with hooking up the oil line LOL.

I have had trouble in the past getting the plastic lines to seal properly. By that I mean they are prone to leak at the fitting. If you tighten them down more the copper feral distorts the line and it leaks worse. I finally went to braided stainless lines with AN fittings and haven't had any problem since. I realize braided stainless is not traditional but it sure beats an oil leak.

 

I agree with plastic vs. copper. I've had copper fracture and leak, but the plastic seems to hold forever. Just sold a car I had for 40 yrs. and the plastic gauge line was on there for probably 35 of those years.

 

Let alone ruin a new pair of jeans. I've had more plastic oil pressure lines leak or break right at the gauge than I care to count.

My first "real" job was working in a Honda Motorcycle shop in 1964 and my job was pulling new Honda bikes (50's through 305's) out of the crates and assembling them for the showroom floor. They always had oil in the cylinders and I wiped the wall in the shop off more than once that summer. Those little Honda 50's would squirt oil a long ways when you gave the kick start lever a good kick with the plug out.

 

Messy....... I discovered a Mo Par factory item to fix the breaking issue with copper or steel o.p. gage lines. It was a 4" piece of flexible line that connected between the o.p. port, and the copper (or steel) line.

4TTRUK

 

Ps; Any similar piece, would serve the same purpose.

4TTRUK

 

A bit OT. We had one of our horizontal CNC mills breakdown and the fix was time consuming and costly, so it was a big deal when it got back in service.

The shop supervisor comes out to watch the maiden voyage as it gets fired up and put through the paces. The operator has the guy stand "right here" so he won't get any coolant splashed on him.

About 3 seconds later... one of the hydraulic lines wasn't on all the way. The supervisor gets doused right in the chest with an arterial spray of oil. Shirt, tie, suit jacket, the works. It was funny since the guy wasn't too well-liked.

Bob