g'day I'm Brett in this video I'm going to show you how to install an engine oil
temperature gauge when working a vehicle hard in soft sand or when towing a
trailer in hot climates with little forward speed for air cooling engine oil
temperatures can rise increased temperatures reduce the engines oil
viscosity film thickness and film strength reducing the lifespan and
lubricating effectiveness of the oil at above 130 degrees Celsius or 266 degrees
Fahrenheit engine oil degrades rapidly so to keep my oil lubricating my engine
effectively I'm installing an oil temperature gauge to better monitor
engine oil temperatures allowing me to respond to high temperatures such as
by pulling over idling the car with the bonnet up to assist in air
cooling. Now I've chosen a video matched gauge and sender unit this comes with an
accurate scale on the front allowing me to know the actual temperatures compared
to a more useless gauge with a red and green safe area which is pointless
you'll need a 52 millimeter mounting hole to mount the gauge the sender unit
requires a thread in the oil sump your car may come with a thread already if
not you'll need to remove your oil sump have it drilled and an adapter braised on
to accept the sender an alternative is if you have a large oil sump plug you
may be able to remove it have it drilled and tapped to accept the sender or you can
search ebay and find a sump plug adapter ready-made so let's begin with
the installation I'll be installing the gauge in my Raptor dash by replacing the
boost gauge which isn't really useful for me disconnect the negative battery
terminal and then I disassemble the Raptor Dash and remove the old gauge for
the wiring there's a positive which is an ignition switch to feed so that needs
to join up to something which switches live when the ignition is on for a
defender there's already a pre-existing circuit for gauges so
I'm tapping into that by using a piggyback adapter off one of my
previous gauges which I already have wired up there's a negative feed which goes to
earth and an S for the sender unit which joins in through the firewall down to
your sender in the engine sump there's a positive and negative for your
lighting so negative to earth and positive joins to your lamp circuit so
again I'm just piggybacking off my pre-existing gauges as everything's
already wired I need to modify the Raptor dash slightly so the gauge will fit
screw the gauge mount on and then connect all the wires positive to
positive negative to negative lamp to lamp next I have to run the wiring
for the sender through the firewall behind the dash up to the gauge the dash will
need to be removed and the wires pulled through the firewall grommet. I use
fine tie wire behind the dash to help pull the wire through crimp on the
connector for the sender wire and fit to the S terminal then reassemble the dash.
install the sender I did a quick Indiana Jones styled swap and didn't lose any
oil tighten up and attach the sender wire
and that's the installation complete I just went for a quick spin around
the block a few times I've got the temperature up to 80 degrees Celsius
which matches my other gauges so for general operating temperature
everything's running fine but under heavier loading conditions like deep
sand and slow slow progress I now have a way of monitoring the oil temperature
itself so I can pull up before any degradation of the oil occurs thanks for
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