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Mag-Hytec/10.5 diff

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Old Jan 8, 2007 | 09:26 PM
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Mag-Hytec/10.5 diff

My mag-hytec diff cover is on it's way, and I already have 3qts of royal purple 90w-140. Stock capacity is just shy of 2.5qts, but does anyone know the capacity with a mag-hytec?

Do I need one or two more qts?
 
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Old Jan 8, 2007 | 10:14 PM
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On the theory that they'd be on par, I got a finned aluminum cover for my 10.5 and it was just a touch under 4 quarts to fill the whole deal.
 
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Old Jan 8, 2007 | 10:36 PM
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I have no clue, just pour until it brims over! then you're good, I'm guessing 3.5-4.5 qts.
 
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Old Jan 8, 2007 | 11:01 PM
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but to pour, you must have it one hand and no one locally stocks royal purple (mine is a day out.) I would hate to short the mechanic installing my gears.
 
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Old Jan 9, 2007 | 01:52 PM
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It is just about double stock amount, I would have 5 or 6 Qts in hand before starting the swap.
 
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Old Jan 9, 2007 | 02:42 PM
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I would have 6 quarts on hand.


I seem to remember putting 5.5-5.75 in mine.
It has a dipstick.
 
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Old Jan 9, 2007 | 05:38 PM
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Yep, I ordered another 3 qts today.
 
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Old Jan 9, 2007 | 06:05 PM
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royal purple sucks but anyways i think i put about 4.5 in mine
 
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Old Jan 9, 2007 | 06:42 PM
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And what puts you to that opinion?
 
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Old Jan 9, 2007 | 08:44 PM
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Oh heck ya didnt say gear change. If you're doing both pumpkins and supplying the oil give him 8.
I did the same as you. I got the RP and gave it to the installer so I knew what I was getting.
 
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Old Jan 9, 2007 | 09:06 PM
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I have different grades f/r. The manual calls for 90 weight on the front and 90w-140 for the rear. I will have a total of 9 qts tomorrow, I sure hope that does the trick, at 7.50 each it's adding up on an already expensive project.
 
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Old Jan 9, 2007 | 09:17 PM
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about 4.5 qts is what we find. as it adds about 2 qts to it.
just make sure your on the flat and level or you will not get it correctly filled and use a full syntec 75w140 ?oil or as ford specs out. sorry about the numbers my mind is just a little short tonight.
 
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Old Jan 9, 2007 | 09:19 PM
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Yeah I couldn't remember if is 75 or 90 w-140 either. I had the owners manual out while ordering, so it should be correct.

Thanks for the info.
 
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Old Jan 9, 2007 | 09:25 PM
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A dry rear end should take about 6 quarts, and an oil change should be about 5 quarts. I think that amount reaches the top division on the dipstick, but my pinion is also tilted upward.

~Dave
 
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Old Jan 9, 2007 | 09:59 PM
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my mind is now 60 and some things don't stay around on the short term any more. i can remember veitnam but not today or yesterday. plus i just sold my 05 super duty and started playing with a 07 mustang for kicks. man that rear holds almost nothing compaired to a super duty. your going to like that cover with the dip stick and temp sender plug already in it.
 
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