Good morning...Like to know what my options are when trying to tackle a slightly high oil pressure reading on my 1970 dart swinger 340. Maybe the oil filter is filled with dirt etc, the oil pump?... i guess what Im asking is (since i haven't changed the oil in 3 years..(only driven it a hand full of times ) please don't judge..i'm thinking of changing the oil and filter before i start digging into the problem of changing things out..the oil is not bad and doesn't feel gritty