Bonneville America Forums Forums Technical Forums General Tech Oil Additives

I cannot speak in regards to Mobil 4T oils, but I know that Amsoil will void any warranty if you use a after market oil additive. Amsoil claims that they test every oil additive that comes onto the market, and have found none that enhance the oil, some that reduce the oils life and some additives that actually react to the oil/additive package of the oil and damage/destroy the oil/additive package.

My experience with Slick 50 is that you are wasting your money if you are using a high quality syn oil. I have even talked with Amsoil technical department about this. They said that Amsoil is so highly detergent that the oil will just clean the Slick 50 out of the engine.

Tom