Hi folks sorry if this has already been covered somewhere. I am new to this site in fact I am new to landys, just bought a series 2a tax exempt and cant stop smiling however this morning I was going along the a30 when the oil pressure light came on and stayed on. i noticed if i revved up it went dimmer but just lit up again when I drove at normal speed. i checked the obvious, lots of oil and it wasn,t ****ing out everywhere. Any ideas please