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- Oct 16, 2023
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- 75
I’m going to change my gear oil in my 2020 f150 I just purchased I am considering going amsoil but is it worth it, or is an off the shelf gear oil equal? Which would you go with? Thanks everyone!
Preferred gear oil for super 8.8 rear end.
- Thread starter Orangepeel
- Start date
Use the GL5 rated synthetic gear oil recommended in your manual. Change it as manual says OR every 25K miles for many miles of trouble free use is what I would do.
I was never convinced that Amsoil is any better to justify its high cost. I would use an off the shelf gear which meets the needs stated in your manual for your differential type.. I have mostly used Supertech or whatever was cheapest in the past for my Ford's 8.8 differential.
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Motul Gear 300 & HPL Differential Life 75W90 VOA comparison!
So, as everyone knows from my past posts, I am a big fan of Motul's Gear 300 especially in Subaru differentials. It's the only gear lube I've ever personally used in my 6 Subarus, and it's what I use for all friends and family as well. Its claimed specs are very good; a full synthetic...
bobistheoilguy.com
5 different gear oils are tested in that thread. We’ve got 6 more oils’ test results coming soon.
Long story short, Amsoil is a top performer in many of the test categories.
dnewton3
Staff member
Gear oil ... PRI QPL
This is a link to the PRI website. Under the Documents section, you'll find the QPL (Qualified Product List). Any lube on that list is licensed to the performance standard. They do a good job of updating the list; I believe it's done quarterly, so this link should be current as long as you don't...
bobistheoilguy.com
Pick one from the above list. They all qualify to the same performance standard regardless of base stock.
The 8.8" is a pretty darn reliable and robust unit, so as long as you treat it well it should last you a very long time.
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And ?
- Joined
- Oct 16, 2023
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I couldn’t seem to find what you’re referring to on that site.
Those super 8.8’s. come with 75w85, if you want to stick with the oem spec, however any 75w140 would serve you well. You won’t notice any measurable fuel economy loss.
Amsoil is good to go. I recommend 75W-110
https://www.amsoil.com/p/severe-gear-75w-110-svt/?zo=515729
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