do i need to drain the oil to install a oil pressure gauge. in the instructions included with my gauge it say i may need to but in the mods section it doesn't say anything about having to. i just wanna make sure i don't remove the OP switch and get a face full of oil. TIA
#37700, "RE: oil pressure gauge" In response to Reply # 0
Is it elec. or mech.? I have the elec. one and all I had to do was remove the stock oil psi. sender and and T it off with the autometer one. This can be a bitch because your pretty much working be feel and your reaching way up at the back of your engine.
Short Answer: If you have an Elec. one, NO. You don't have to drain your oil.
If your have the Mech. one then I don't know shit.