DaveInDenver
Middle Income Semi-Redneck
@Happy Joe, up until I owned my 2008 Tacoma I would have agreed. The oil pan generally wasn't something I worried about a lot. But the geometry of the front end on 2005+ 4WD Tacoma and similar generation 4Runner and FJ Cruiser with the 4.0L V6 puts the front diff and rear oil pan (there are two on the 4.0L, a front and rear, the sump is the rear) in close proximity.
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If those diff support arms are stressed...
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...the corner of the diff can punch a hole in the block.
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Admittedly this example is from a special situation since the owner was using a diff drop kit that made it even more vulnerable and he used his truck harder than average.
https://www.tacomaworld.com/threads/remove-the-differential-drop-on-your-05-tacoma.118545/
But in any case the diff support arms and proximity of components remains IMO a potential issue. So running a substantial skid under there I think is good insurance. The diff itself hangs low and is vulnerable to being dragged. The stock plates are referred to as splash plates and are not supported between the two subframe drivetrain cradle cross members.

If I could run just a plate there to replace the lower one I would, the front plate has less directly behind it and has two folded supports behind it. It gets dented but that's cosmetic. But every aftermarket plate is one piece running from radiator support in front to the second lower crossmember so unfortunately we're stuck with 60 lbs of 3/16" steel or 30 lbs of 1/4" aluminum as the options.

If those diff support arms are stressed...

...the corner of the diff can punch a hole in the block.

Admittedly this example is from a special situation since the owner was using a diff drop kit that made it even more vulnerable and he used his truck harder than average.
https://www.tacomaworld.com/threads/remove-the-differential-drop-on-your-05-tacoma.118545/
But in any case the diff support arms and proximity of components remains IMO a potential issue. So running a substantial skid under there I think is good insurance. The diff itself hangs low and is vulnerable to being dragged. The stock plates are referred to as splash plates and are not supported between the two subframe drivetrain cradle cross members.

If I could run just a plate there to replace the lower one I would, the front plate has less directly behind it and has two folded supports behind it. It gets dented but that's cosmetic. But every aftermarket plate is one piece running from radiator support in front to the second lower crossmember so unfortunately we're stuck with 60 lbs of 3/16" steel or 30 lbs of 1/4" aluminum as the options.
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