this woman is going nuts with these noisy lifters

1 1/2 years ago, my engine should of blown from lack of oil for 2 days. it didnt, but now i have these loud lifters that wont quiet down with slick 50, rislon, cr2, lucas, thinner then thicker oil. Nothing works. i need one of you smart boys out there to help me out and tell me what will do that. And also, i probably get 11 miles to the gallon.
Thanks Peggy

See: http://www.automotiveforums.com/vbulletin/showthread.php?t=222104

to start oil must be replaced every 3,000 miles dont go a mile over the life of your vehicle depends on how well you take care of it. I bought a 96 trooper with a 3.2 it had all kind of tappity tapping going on.
I am an isuzu tech and would not tell you to do this to your vehicle if it would harm it...
next oil change use 4.5 qts 20w 50 I prefer penzoil or castroil once you have decided which you want to use stick with it (use only that type of oil). When oil is changed add 1qt transmission fluid do this every other oil change there is a very good chance your noise will go away after about 8-10,000 miles if it dont go away it will guiet down some. If you cant wait that long spend $1,600 to get the rockers replaced