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Jul 21st, 2025 | | | | Joined: Apr 2008 Posts: 136 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2008 Posts: 136 | What is the 1/8" fitting on a 58 oil gauge?
It looks like a flare ytpe. If it is how do I flare something that small?
My brake flare kit does not go that small.
Thanks | | | | | Joined: Nov 2002 Posts: 1,002 Shop Shark | | Shop Shark Joined: Nov 2002 Posts: 1,002 | I think that fitting was used by GM into the 70s. It's actually a compression fitting. I haven't replaced one recently, but if IIRC just cut the end of the pipe off and slip a fresh pipe end into fitting. If your not comfortable using the old fitting NAPA has new fittings in their small parts bin.
Larry
I don't own a vehicle that isn't old enough to drink.
| | | | | Joined: Apr 2008 Posts: 136 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2008 Posts: 136 | The inside looks just like a 1/4 or 3/16 female brake line type flare.
I ended up putting the 1/8 nut on the copper line then I installed a compression fitting on the line. Next I cut the 1/8 compression fitting off the line leaving only the 1/8 flare type fitting with the compression ring. I then took the dremel and trimmed up the ferrule and tbg.
It works great and I have about 35-40 psig | | | | | Joined: Dec 2003 Posts: 2,952 'Bolter | | 'Bolter Joined: Dec 2003 Posts: 2,952 | If its at all like an AD gauge then its a compression fitting. | | | | | Joined: Jan 2008 Posts: 4,903 'Bolter | | 'Bolter Joined: Jan 2008 Posts: 4,903 | Eaton/Fuller transmissions use 1/8 plastic tubing with compression fittings for the shifter. I have used them before on 1/8 brass before. It may not be correct, but it worked. These fittings are available at heavy truck dealers. | | |
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