I got 214,000 miles out of my 1979 3.0L without the motor being opened up for any major work. I took the easy way out by swapping out for a late model (1987) 3.2L
As long as your 3.0L isn't polluting or pouring oil out just keep driving it.
I can't imagine driving only 500-1000 miles a year. Mine is not a daily driver but I am committed to driving the wheels off my SC. I would rather wear it out then have it as part of my estate
