i have a 1987 305 iroc 700r4, me and my dad put a new throttle body on the car and forgot to tighten the coolant hoses and when we drove it sprayed all over the engine. i put more coolant and water in there(not measured) and when my car runs for 20 minutes ( when the temp raises) the oil presure drops to right above that red line. I was wondering if it was because we did not put the proper coolant water ratio in it or is it a more serious problem Thanks alot!