BrianC
Thread starter
Originally Posted By: buster
If Mobil 1 didn’t exist, I’d probably use Amsoil. It just so happens that Mobil has always taken synthetics very seriously and has always made one of the best overall performing oils you can buy, readily available. Both Amsoil and Mobil 1 make great, well rounded performing oils. I’m sure the Amsoil 0w40 SS is great, but it just isn’t worth it when you can easily get M1 0w40 which is arguably the best overall, most proven oil on the market.
My guess is Amsoil 0w-40 is going to come in at <800 ppm Phosphorus to meet SN like the 5w-50. As both are intended for US vehicles, not EURO. That would differ from the 900+ Phosphorus in M1 0w-40. Minor but a difference as to CAT's life so they say.
If Mobil 1 didn’t exist, I’d probably use Amsoil. It just so happens that Mobil has always taken synthetics very seriously and has always made one of the best overall performing oils you can buy, readily available. Both Amsoil and Mobil 1 make great, well rounded performing oils. I’m sure the Amsoil 0w40 SS is great, but it just isn’t worth it when you can easily get M1 0w40 which is arguably the best overall, most proven oil on the market.
My guess is Amsoil 0w-40 is going to come in at <800 ppm Phosphorus to meet SN like the 5w-50. As both are intended for US vehicles, not EURO. That would differ from the 900+ Phosphorus in M1 0w-40. Minor but a difference as to CAT's life so they say.