[AT] B&S engine oil

[Len Rugen]

Supposedly, the viscosity modifiers in multi grade will break down 
quicker in air cooled engines because they run hotter.


On 11/10/2012 2:05 PM, John Maddock wrote:
> Noticed yesterday in a shop which sells B&S stuff: a sign saying "Use
> *only* monograde oil in your B&S engine.  DO *not* use multigrade oils"
>
> Why? Anyone know?
>
> Which Oil Demon will get me if I use multigrade?
>
> JV
>
>