Re: Oil

Posted by bkazmer On 2017/2/24 17:08:30

You are mixing viscosity modification and detergent additives.

Viscosity modifiers are polymers added to make the oil viscosity less dependent on temperature.

Detergents are meant to attach to crud in the oil to keep it suspended instead of depositing.

So an oil can have none, either, or both.

I believe NAPA carries non-detergent, 30W, in their house brand.