Phox is right on. I have one and really like it ;D

 

Sorry I got off track, but those are cool!!!<br><br>Anyways, I feel the way you do. I need to know what the big advantage is before I make my wallet $300 thinner. I hear they are great except they can hit stuff, like spare and track bar. And I mean great by the fact that you dont need silicone, you have the handy magnetic dip stick, and you gain a quart. Even though I've never seen a differential low unless it leaked. (except from the factory)

 

One of the biggest advantages is that fluid changes are quick and complete - do it yourself in the garage or driveway with no mess! With the heavy magnet on the plug, and the other magnet on the stick, you have the ability to &quot;at a glance&quot; see if there is metal in the fluid by pulling the stick. <br><br>Easy, clean, more fluid, and mine doesnt interfere with anything on the truck, but I only have the Dana 70... <br><br>HTH<br>-joel

 

Katoom said it, no silicone! It is a pain scraping off all<br>that silicone every time. Trying not to get it into the diff.<br>I just did my front and rear 2 days ago and really wished I had<br>Mag's to put back on. Next time for sure.<br>I don't think either had been changed, I got the truck with 45K<br>, the rear was pretty dark, the front looked clean, like new.<br>I can see where the extra fluid capacity would help the rear.