Quote:
Originally Posted by Diesel911
If you don't want to try fool with removing the Washer wire brush the plug threads, and degrease it with Brake cleaner.
Get a tube of the non-hardening Peramtex, the old greenish or brown colored stuff and heavy coat the threads all the way up to and under the head of the plug. Install it normally and let the excess mush out and leave it alone.
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I guess my first and foremost question to those who have done it before is....
Does it look to you like the washer is still stuck to the block?
It does to me, given the color and height off of the flat black raised block surface, but I may be wrong.
When I had bought the car in CA, it had Rotella OAT coolant. It’s the same coolant, about a decade old. Pristine clean and clear, but I’m going to JD Cool-Gard II as I want to use a consistent HOAT coolant for this and my 350SD (and 240D but that one has new fresh coolant in it) when I get the head gasket done. I’m concerned with coolant chemistry in that car, and believe that the Cool-Gard is the best choice for mixed metal engine designs like my 603. So anyway...
Anyway, that’s why I’m doing a series of flushes, and I’ll be pulling the plug again, perhaps a few times. I’m just not sure that I’ll be able to get the washer off if I want, but if my interpretation that it’s stuck to the block is wrong, I’d also like to know that....