Re: oil return line
 

I ran the adapter from 1/8 BSP to 1/8 NPT that came with the walmart oil pressure guage. Then I put a 1/4 hose barb in the fitting, and ran hose up to my T's on the firewall. I heard it's not a good idea to have adapters and stuff sticking way out off the block.

Re: oil return line
 

Im pullin it out today and see if my fitting will go in....i dought the sensor will tho