Lockhart Oil Cooler IN vs. OUT

[JGonSan]

I have an old shovel head oil cooler. Does it have designated in vs. out side for the oil lines?

[lilmad]

It should have an inline thermostat that goes with it, that will open and close

[triumphbruce]

I believe that looking at it from the front of the bike.
the one on the left is inlet.
the original ones just came with a cover with instructions to use
it below 55-60 degrees outside temp
later models had a valve to reroute the oil when cold
I don't use a valve I just cover mine.just a choice up to you

[JGonSan]

Hot days here in South Texas. We've had no winter. The occasional cold day here and there. Pretty much riding weather every day. Thank you for the reply. Got my my hard tailed sporty fired up, oil circulates fine.

[triumphbruce]

kool refreezing here in the north

[TwoSheds]

The inlet and outlet don't matter unless you have a cooler with a built in thermostat, which you don't. They are just opposite ends of the same tube.

[DanAz]

The inlet and outlet don't matter unless you have a cooler with a built in thermostat, which you don't. They are just opposite ends of the same tube.

Agreed.
I've been screwing with them for years. They're a simple radiator, unless you have one of the new fangled kinds with a thermostat. The thermo is real obvious, you'd know if you had one.