oil pressure drops after engine heats up on 1995 Chevrolet 1500 Pickup

truck runs good till you take it for a ride then oil prssure drops and engines sounds rough just bought it. Any suggestions about what might be the problem it is a chevy 1995 1500 pu.?

by in Lake Luzerne, NY on June 10, 2012
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1 answer 1 comment
ANSWER by , June 10, 2012
poss oil pump or plugged oil p/u screen repl together
COMMENT by , June 10, 2012
thanks for info will have them checked out!!!!