I think that the AMSOIL flexible container is literally the best thing ever. For those hard to reach applications where a normal 946ml rigid bottle can't get to without using pump. Just squeeze the oil in and done, no mess and no pump!. Another plus is the the overall plastic waste footprint is much less than a rigid bottle. Less waste in the application and less waste for disposal!. I can't say enough about the quality of the oil and how far superior the packaging application is.
Replaced the differential gear oil in my truck after the 500 mile break in period. Still in the process of installing power disc brakes and unable to comment on the product. But the Squeezable oil bottle is the way to go. Had an original 1 gal. pump bottle and that was a pain. Let it sit in the AZ sun for a while and it was so easy to put through the fill hole without any mess. Ordered more for my tother truck and motorhome.
Great gear oil have noticed a 3 mpg increase in my wife’s Jeep Wrangler with nothing else being changed. I did both front and rear differentials. Also it doesn’t smell awful like most gear oil which is nice.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Severe Gear Oil
By 
Andrew, 
a 
Verified Buyer 
from 
New Jersey  
on 
September 19, 2020
I’ve always used Severe Gear Oil in all of my differentials and I’ve never had an issue; after 50k, it still looks clear and viscous. The squeeze bottles make the drain and fill process even easier. Spend the extra money for the piece of mind and go Amsoil.
I use Amsoil in every engine I have including lawnmowers, farm tractors and my classic cars and have for years. Never had a problem with Amsoil products.
It's a gear oil... I just poured it in about a week ago. Can't really say anything yet. I suppose it does what it should. I actually overfilled the rear differential because my truck was on the hill when I changed the oil, so I wanted to make it right and parked on the leveled surface today and unscrewed the fill plug. About 6 oz of oil came out. I noticed its color and translucency changed after a week of driving. It was noticeably darker. About 150 miles. But to me it means that synthetic stuff cleans the dirt and residue that was left there from my old conventional oil. I might need to do another differential change shortly then I expected. But after that second change - I would leave it alone for a loooong time....
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