Engine oil RED LINE or AMSOIL
I use Redline but it’s about the same price if not moreso.
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 Redline 10w60.
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.
I’ve been using redline in my 2020 fxlrs for the last 3 years. A few guys I know swear by it.
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 tried the redline 5w30 previously which has very high levels of moly (>800ppm) and the results were not as good as the moly-less 5w40.
Those guys don't replace you crush washer, and the oil the use is crap.
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