I fitted an oil pressure gauge today ,after driving 5 miles and i notice my oil light is on ,the oil pressure gauge i fitted is not working either for some reason ,so i guess theres a problem where i replaced the oil pressure sender under the altenator with te new one and its loosing pressure there. there is plenty of oil in the engine. Could i drive it slowly back home 5 miles away or its it not a good idea to drive the car if its possibly loosing oil pressure ?