I drove my SV today for the first time in a couple of weeks and was surprised by the oil pressure at idle. Unless my memory is failing me (always a distinct possibility), my pressure when warm has always been around 25 psi at idle (around 1100 RPMs) and 45 at 3000 RPMs, which I think is pretty close to what it is supposed to be. On a highway drive today it was still 45 when warm but only went down to 35-40 or so at idle.
The only thing that has changed recently is that I switched from Castrol 10W30 to Rotella 15W40. Is the change in viscosity enough to account for the increase in idle oil pressure?
The only thing that has changed recently is that I switched from Castrol 10W30 to Rotella 15W40. Is the change in viscosity enough to account for the increase in idle oil pressure?