Quote:
Originally Posted by Zulfiqar
there are two block drains - one for each side of the block - its usually a 14mm head bolt, That sludge you see is due to air in the cooling system.
If you notice - the radiator cap is a bit lower than the Z shaped steel pipe on top of the lower manifold - thats where it locks in air and dexcool starts to accumulate this sludgy junk. I found that its best to backfill the engine with coolant slowly from the heater hose that leads to the back of the thermostat, then fill with a big funnel stuck in the radiator cap opening and keep the level higher than the entire engine start and bleed through the bleed valves.
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Thanks for the tips. I'll definitely look for that second drain plug.
Quote:
Originally Posted by Simpler=Better
That looks about 3x cleaner than my DD which has been flushed twice now. If it doesn't overheat, flush & refill....
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It doesn't overheat, but I hate the idea of this crap in there. I'm still considering my options. At this point, I want to pull the thermostat to see how bad it looks. If it's relatively unsludged, I'll just run a flush or two. If it's nasty, I'll want to disassemble and clean the cooling system the best I can. i may still remove the radiator either way. We'll see...
Quote:
Originally Posted by P.C.
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That seems just a touch drastic.
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1982 300SD -- 211k, Texas car, tranny issues ____ 1979 240D 4-speed 234k -- turbo and tuned IP, third world taxi hot rod
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