Okay, wow. Where do I start.
1.) No 10w40. Bad idea. It shears to a 10w30. When shearing happens deposits are formed from the broken polymer viscosity index improvers
1.) No 10w40. Bad idea. It shears to a 10w30. When shearing happens deposits are formed from the broken polymer viscosity index improvers
Then you should also know that a properly formulated oil contains stabilizers (anti-oxidants) and detergents that are designed to minimize "deposits" when vis-breaking of the polymeric viscosity indexers occurs.
Does Amsoil 10w-40 vis-break/shear down to 10w-30?
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