Motor dies after startup.

my mechanic friend suggested cleaning out the oil by replacing it with transmission fluid as a way to flush the crud out. and then putting fresh new oil inside.

man i'm totally stumped. i've bent 3 push rods that i know of, the car was fine last night, adjusted the valves while hot, drove it to work this morning, and the car sounded absolutely awful coming home, probably bent more push rods... :(

i haven't added anything to the fuel. i did wonder if it was a timing issue, did a general search on the forum last night. like maybe a worn timing chain or maybe the tick marks are off, but i would think that if they were off, i'd have problems on all cylinders, no? what do you guys suggest adding to the fuel?