Engine oil AMSOIL or Mannol

I literally just changed my oil today, I love it, I have been using AMSOIL directly for years now with free shipping and free membership if you spend 500 a year or more if I recall correctly.

I use AMSOIL signature series 0W-30 but the Mobil-1 suggested by others is totally fine — AMSOIL is awesome but is expensive.

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.

Oi analysis came back and no extra signs of wear... Mannol is great oil just change at 5k and add in oil additive such as ceratec every other change

I've used for the last 20k miles and no problems! Just change at 5k.

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

I did have a 1982 diesel Jetta go 435,000 miles on oem int. shaft bearings. I had access to a lot of free Amsoil back then....so, that may have helped. However, I think it over-lubed the cylinder walls though. Rings weren't exactly what you would call 'tight.'

I have used Amsoil, but I feel as if my motor makes a funny noise with that in it.