Can you use Gear Oil in an Engine? Let's Find out!

Most people believe that Gear Oil is much thicker than Engine Oil, and putting it in an engine would destroy the motor. So I put that theory to the test. I check oil pressure with 20W50 Engine Oil and 75W85 Gear Oil in the engine. Then I perform some Project Farm/Engineering Explained Lab Experiments to reinforce the Oil Pressure Experiments.

The Results Might Surprise You!

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00:00 Introduction
01:11 Why Does Gear Oil Stink?
01:33 Oil Pressure: 20W50
03:27 Oil Pressure: 75W85
06:44 Lab Experiments
11:05 Explanation of Results