What's the formula of gauge pressure?

when do you add or subtract gauge pressure to atmospheric pressure to get absolute pressure? Pabs = Patm +- Pgauge

i jus bought a 95 wrangler, its got a 4 cylinder engine, and my dad looked at it, checked all the fluids and everything before i started driving it, now i think its jus an idiot gauge lol, cause when i start the jeep, the oil pressure goes straight to...

I have a 98 mustang gt, Im in Iraq (US Army) so I dont have my car infront of me! I just wanna make sure I have everything I need so I can install my NOS kit and all gauges when I go home on leave! Im trying to avoid any delays! Im stationed in Germany...

My 1996 Jeep Grand Cherokee is a V8 converted to 2WD. It's not by any means a new vehicle and has had its share of problems. I've replaced the axles, various sensors, the tires, and other small parts. Recently the problems have included the Oil Pressure...

father put water line up hill to cabin and had water pressure up there. father passed away. water was connected from pump house. gauge is saying about max pressure on gauge. son did something in pump house. dont know what. was a tank(air tank??) hooked...

Im going to install an oil pressure gauge on my car and was wondering whats the right oil pressure my cars should have . I now i might need to upgrade to a vtec oil pump. also are the gouges hard to install?