pulled and replaced a dead block heater. just pop it out,, puke coolant all over, and slip in right it,,, I said "Slip It Right In!!!" AH DAMN IT WHY WON'T IT JUST SLIP RIGHT IN!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Holy hell, that was a bit harder than it needed to be. for some reason the oring, would pinch and slip out of the hole in 1 lil area. 30 mins later, I finally found the right tongue sticking out angle to get it in there flat enough to tighten the lil 8mm nut, if I could only reach the damn ratchet and 3 ft of extension that's just out of reach on the ,,, Oh HELL!!
Whew,, just like that, I got it. had bought 1 gal of new coolant, split that into 2 by adding h20 and then it seemed I needed another darn near 2 to fill and top it off. So I strained the 1yr old coolant that did manage to make it in the pan thru a new red shop rag, and filled her up. Burb'd it a couple times, and bleed it off via the screw, then power washed off the mess I made.
nothing like a 15 min job to take 2 hrs.