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Discussion Starter #3
Bumping this back up, check out all our different differential covers:




We carry covers from all the top manufacturers including Nitro, ARB, Riddler, Solid, Rockcrusher, Teraflex and many more. If you need a quote or have any questions let us know.

 

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Made in the USA Nitro X-Treme Aluminum diff covers look great, help keep your axle cool and are extremely strong (proven in Ultra 4 racing applications). Nitro makes them for all common applications and we stock virtually all of them in both our warehouses.

Starting at just $139.99, check them out here.


You can find all the various differential covers we stock from different manufacturers here.
 

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Discussion Starter #7
Besides NITRO differential covers, we also stock a few other manufacturers covers. Including the ever popular and extremely durable nodular iron ARB differential covers. Check out all the ARB covers HERE.

 

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NITRO differentials covers and durable and lightweight, we stock all the popular models too! Click this link for pricing or call 866 349 6801 and speak with one of our Differential Experts to learn more!

 

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The first few of these new Nitro Alloy covers in red powdercoat have started shipping with a big batch in production shortly. Dana applications available to order now! Click here for details.

 

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Discussion Starter #10
Most oils today are 'Multigrade' oils, which means that the oil is defined by 2 viscosity grades (i.e. 10w-40, 5w-30, etc). Multigrades were developed more than 50 years ago to avoid the requirement of using thick oil in summer and thin oil in winter. The W stands for winter, not weight, which means that the oil has a certain viscosity/flow at low temperature. A lower 'W' number means the oil performs better in cold temperatures. The non 'W' number indicates the oil viscosity level at 100°C (212°F).This is a fixed limit, all oils that end in the same number (30) must meet the limits.

We recommend using 85w-140 in differentials. Whether you are changing out a differential cover, or just replacing the fluid, it's important to use the right oil in your diffs.
 

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Don't forget about a new differential cover when you're upgrading your gears or differential parts. They are cheap insurance against rocks and obstacles on the trail. You can check out all the differential covers we stock, HERE.
 

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Discussion Starter #15


What's normal operating temperature for differentials?

Here's a pic taken in a toterhome RV (Freightliner chassis) of the factory differential temp gauges. Pretty cool that semi trucks monitor those temps as standard equipment.

When this was taken the outside temps were in the 60's and the loads were fairly low on the axles. You can even see that with the rear most axle not engaged it was running a bit cooler than the drive axle. Still 160* F or so was the average and would not be an abnormal temp in a car or 4x4 after running down the highway for a couple hours straight.

This is why changing the gear oil regularly makes such a difference in the life span of your axle parts. The oil does break down from the heat and changing it frequently is absolutely the best insurance against premature wear and breakage.
 
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