This is an interesting one. My 3TGTE has broken a std VDO oil pressure guage by winding the needle all the way around to the zero stop which is where it has stayed ever since. This means that my oil pressure is around 120+ PSI which apparently is normal. Note that if you use a non-standard Ryco oil filter on these engines the high oil pressure will split the filter and fill the engine bay with oil - I've done this once and it was not nice!