Re: Motor oil

[Susan and John Roper <vscjohn@huntnet.net>]

Rich Atherton wrote:

>     Most of the posts on this subject have missed a serious concern.  One of
> the weaknesses of the Buick/Rover motor is the oil pump drive.  the gear on
> the end of the dizzy that drives both the pump and ignition has limited
> capability.  Any increase in pressure by viscosity or increased spring
> pressure on the valve increases the load on that gear.  Excessive oil pressure
> not only unnecessarily loads the weak gear but also soaks up horsepower.
> Smokey Yunicks's rule of thumb is 10# per 1000 rpm.  Me, I trust Smokey.  John