Here\u2019s How Oil Looks Inside Your Diff

The mad scientists at Garage 54 have already shown us how oil works in an engine, as well as how cold oil works in an engine. This time around, the team has moved to the rear of a car to show just how the differential lubricates when the oil is both warm and cold. The differential uses thicker oil than the lube in your engine, which makes all of this just that much more interesting.

By now, the folks at Garage 54 have become experts at replacing metal covers with vacuum-formed plastic. To get the right shape for their GAZ- 3102’s differential cover, the team drilled holes near the mounting flange. The reason behind the need for an accurately formed differential cover? Those covers are designed to help the differential sling the oil and effectively lubricate all the parts.

Just like the engine oil experiment, the folks at Garage 54 opted for a thick mineral oil instead of a synthetic alternative. With regards to the experiment, this information doesn’t matter much at room temperature. However, it wouldn’t be Garage 54 if the folks didn’t show how the cold affected the oil.

Unfortunately, unlike in the engine oil video, spring has made its way to Russia. This brought the temps up to a seasonable -10 degrees Celsius, or about 14 degrees Fahrenheit. Despite being considerably warmer than the engine oil video, the oil is still considerably more viscous outside than when the car was in the garage. You see a noticeable difference in the way the oil flows at cold temperatures.

We don’t doubt using a high-quality synthetic oil would alleviate most of these problems, but it’s also a good idea to take it easy on your car while it’s still cold. Watch the video (starting at the 0:52 mark) and see the lubrication difference for yourself.

What else would you like to see behind a clear cover? Let us know in the comments below.

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