i have a sprinter 308 1997 been running like a dream on my way home the oil pressure warning lamp came on i checked the oil level which was ok ive since renewed oil & filter and renewed pressure switch light still on so obviously concluded low oil pressure is there any common faults with failing oil pressure or shud i torch it (just kidding mr insurance man) any help would be much appreciated ps i have noticed the servo not very efficient when i had to move it on to my parking area is or could this be connected to low oil pressure thanks lee