hi,
part of rebuilding my s/c 95 m-ed was to replace the idiot oil pressure guage with a real one from an earlier car, (93 i think). went it is fairly cold, the gauge reads 30 + to almost 60# on higher rev's but once hot, it reads less than 30 and as low as ~10#.
does this sound right?
i also found the water temp sender on ther left side of the back side of the motor, so my water gauge works now too...next is the a/c trouble shooting, (elec i think) tia, peter