How to Install an Oil Temperature Gauge on a Harley

Save that engine! Install an oil temperature gauge.

An oil temperature gauge is a good thing to have on your Harley-Davidson motorcycle. By monitoring the oil temperature at regular intervals you can avoid overheating and the resulting oil viscosity breakdown, which can quickly damage your engine. Harley makes it easy to install an oil temperature gauge on your bike. In fact, if you can check your oil level, you can install and use one of these gauges, as they simply replace the factory oil cap and dipstick assembly.

Difficulty:

Easy

Instructions

Things You'll Need

• New oil tank cap and dipstick, with the built-in gauge, for your year and model bike (available at a Harley-Davidson dealer)

1. • 1

     Remove the factory cap and dipstick assembly from your bike's oil tank.

   • 2

     Install the new cap/dipstick/oil temperature gauge assembly.

   • 3

     Ride the bike for a short time, then check the gauge reading to ensure it works properly.

Tips & Warnings

• Check the gauge reading every time you stop when riding in hot weather. Stop riding your bike if the gauge temperature goes above 250 degrees. Major engine damage can occur at these temperatures. Let the bike cool off before riding it again.

• If overheating is persistent, consider adding an oil cooler to your bike's oil system.