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Safe to change Diff fluid on QuickJack?

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Old Oct 27, 2018 | 05:20 PM
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Default Safe to change Diff fluid on QuickJack?

To change the differential fluid, the manual states to raise the vehicle above ground, put the car in second gear, and let it run at 10 mph for a minute.

Is it safe to do this on a QuickJack?

Thanks,
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Old Oct 27, 2018 | 05:54 PM
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What does common sense tell you?

I vote for jack stands.
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Old Oct 27, 2018 | 05:58 PM
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I did it. No problem with the Quick Jacks.
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Old Oct 27, 2018 | 06:00 PM
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Originally Posted by MikeERWNC
What does common sense tell you?

I vote for jack stands.
^^ This.
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Old Oct 27, 2018 | 06:21 PM
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Been doing it for years, more stable than jack stands and more room
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Old Oct 27, 2018 | 07:15 PM
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The quick jack is much safer than jackstands.
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Old Oct 27, 2018 | 07:24 PM
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Originally Posted by lrobe22
The quick jack is much safer than jackstands.

And much more stable with a bigger foot print on the ground. Jack stands kinda scary! Anyone who says jack stands have NEVER used a Quick Jack and have no clue.

Last edited by Vet Interested; Oct 30, 2018 at 12:01 PM.
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Old Oct 27, 2018 | 10:28 PM
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You should be just fine on the Quick Jack.
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Old Oct 28, 2018 | 06:36 AM
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What model # Quick jack are you guys using for our C7 vettes?

Last edited by akers4000; Oct 28, 2018 at 06:37 AM.
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Old Oct 28, 2018 | 07:53 AM
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Did mine Saturday for the second time. Very stable on the quick jack. It seems the traction control will not let you spin the wheels over 6 MPH.
After about a minute or two of that, I finished of the third quart to which topped it off perfect.
I made the mistake of buying the oil at my local dealership $85.00, I should have bought it online.
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Old Oct 28, 2018 | 11:40 AM
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Originally Posted by akers4000
What model # Quick jack are you guys using for our C7 vettes?
I've got the 5000SLX. Love it.
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Old Oct 28, 2018 | 01:01 PM
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I did a tranny fluid exchange last weekend and ran the car at good running speed for quite a while elevated on my Quick Jack - no worries at all except the car will throw lots of codes since it confuses the computers that the front wheels are not moving. They all disappear on the first drive on the ground.
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Old Oct 28, 2018 | 02:49 PM
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I did it on the Quickjack (5000 SLX) with no issues. I feel they are safer than jack stands. Quickjack has a video of a race car being run on their lift. Just for info, after running the car in gear as prescribed, my differential didn't take any additional fluid.

Last edited by George_L; Oct 28, 2018 at 02:50 PM.
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Old Oct 28, 2018 | 03:20 PM
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Drive it, then do it setting flat on the floor... if you aren't the Hulk!
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Old Oct 28, 2018 | 03:21 PM
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Originally Posted by MikeERWNC
What does common sense tell you?

I vote for jack stands.
Common sense tells me you have no clue what you are talking about! Seriously?
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Old Oct 28, 2018 | 03:32 PM
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With the safety lock on the QuickJack, I also find it far safer than jack stands, as long as you're using the 5K lbs. model for a C7.
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Old Oct 28, 2018 | 04:49 PM
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I think doing it on a QuickJack is far safer than jack stands, but I'm not a fan of doing this on either. If the car came off either the jack stands or QuickJacks you'd have a heck of a problem.

Couldn't you change the fluid on the QuickJack, take it down and drive it to heat it up, and then raise it again on the QuickJack to top it off? That would strike me as the safest way to do it.
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To Safe to change Diff fluid on QuickJack?

Old Oct 28, 2018 | 06:41 PM
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The car doesn't budge when running on the Quick Jack. No vibration, nothing. The only way you know that the tires are spinning is by the speedo. I agree that it seems wrong, but it is very easy.
by the way, I always keep my cell phone in my pocket when I am under the car or on the roof. Just in case!
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Old Oct 28, 2018 | 06:55 PM
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Thanks guys. I did it today on my QuickJack. Kept it at 7mph to make the traction control happy. I was able to get 2.9 qt in.
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Old Oct 28, 2018 | 07:05 PM
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Originally Posted by gamo
by the way, I always keep my cell phone in my pocket when I am under the car or on the roof. Just in case!
This is great advise for everyone. My cell phone saved me in 2008 when I fell off my roof...broke my back and blew my pelvis apart. when working alone ALWAYS have the phone in your pocket. I could have laid there until who knows when screaming my head off to no avail.
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