I ran Amsoil in my 2002 7.3 for years and it worked well for me.
Valvoline is ok, but that specific oil does not have the rating required for your vehicle. AMSOIL has by far better additives to clean/restore the engine. If you are currently using AMSOIL, then continue using it.
I use this oil, Total is like recommended by PSA.
I use Amsoil, all 3 holes.
The Engine oil is proven, the claim about the gearbox oil helping to find neutral easier was true for me, and the primary fluid does just that.
I have amsoil 20/50 in the crank, amsoil primary, and amsoil tranny. It’s the bees knees
Any synthetic - I like the Amsoil.
I’m using Amsoil Signature oil.
Yesterday I took my car in for an oil change and got amsoil. I read countless comments of people hating on the price, this and that, but let me tell you somthing, that amsoil ain't a gimmick or a rip off. My car drove sooooo much better afterwards, it kinda shocked me. Smoother, seems faster, more. Consistent shifts, just left me feeling like she felt the best version of herself.
Go with ams oil I use to talk mad shit about the product but honestly I’m pretty satisfied with it because Harley’s syn 3 is just become trash leaving lifters ticking on and the bike has always had the Harley tick but it has quieted it all down. Just my opinion though..
After not being very impressed with Amsoil 5W-30 after a 5,000 mile oil analysis, I'm going to see how this stuff looks after 5K.
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