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Mag-Hytec Rear Differential Cover - Gear Lube Guard

We Add Aftermarket Differential Covers To Our '97 Power Stroke

Mike McGlothlin
Mar 1, 2010
Photographers: Mike McGlothlin
Throughout the last 18 months, we've added horsepower to our '97 Ford F-350 Power Stroke in more ways than one. We added Stage 1 injectors, a complete fuel system, an aftermarket high-pressure oil pump, a custom chip, 4-inch exhaust, an intercooler, and we even upgraded our transmission to handle all the extra power. But we were overlooking one of the most important aspects that every towing vehicle needs: a cooler rear differential. Most would be amazed to know how much heat their rear axle experiences while pulling heavy loads, and if not maintained, the gear oil will begin to break down, culminating in not only a catastrophic failure, but an expensive fix.
Photo 2/6   |   mag Hytec Rear Differential Cover finished Installation
Why Aluminum?
Installing aftermarket differential covers coincides with a diesel's most important aspect: longevity. Most aftermarket covers offer increased fluid capacity and better heat dissipation thanks to their aluminum construction, which leads to more cooling and reduced wear of gears and bearings.
For ultimate peace of mind, we contacted Mag-Hytec for one of its 101/4-inch Ford rear differential covers. Over the years, Mag-Hytec has solidified its name in the differential cover and transmission pan business, and not only do its products feature increased fluid capacities for better lubrication and cooling, they offer a unique look as well.
All Mag-Hytec differential covers are cast in A356-T6 aluminum, powdercoated black, and feature machined cooling fins. And, just like its transmission pans, magnetic drain plugs keep worn gear material from contaminating the gear oil. Best of all, routine maintenance can be performed without removing the cover, and the Allen key wrenches required to install them are supplied courtesy of Mag-Hytec. Additional perks are that the cover, drain plug, and dipstick are all O-ring sealed and require no gasket or silicone to seal them.
Photo 3/6   |   All Mag-Hytec differential covers are cast in A356-T6 aluminum, powdercoated black, and feature machined cooling fins. All Mag-Hytec products are covered by a limited lifetime warranty. Also notice the front Dana 60 differential cover we went with (right).
To seal the deal (no pun intended), we filled both differentials with Amsoil's Severe Gear 75W-140 synthetic gear oil. This is one of the last steps in getting our F-350 prepared to tow, so stay tuned in the coming months, when we'll finally be hooking our old workhorse to a trailer.
Fact: According to the American Foundry Society, A356-T6 aluminum is typically used for airframe castings, machine parts, truck chassis parts, aircraft and missile components, and structural parts requiring high strength.

Sources

Mag-Hytec
Van Nuys, CA 91402
818-786-8325
www.mag-hytec.com
AMSOIL
Superior, WI 54880
715-392-7101
www.amsoil.com
McMaster Carr
Santa Fe Springs, CA 90670
562-692-5911
www.McMaster.com

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