Quote:
Originally Posted by Bimmer-Bob
Just looked at the expansion tank again after reading about the coolant circuit (didn't realize there was another tank in the R fender). It's filled right up to the cap, way above the max fill arrow on the side. It also "green stuff," which I'm reading is bad. It's frustrating because the system was flushed, refilled, and pressure tested by a reputable indy Mercedes specialist - you'd think they'd know enough not to overfill the coolant, and to use the appropriate product. What am I risking like this?
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If you change it out every year or two you're not going to do any harm to it. The green stuff is pretty safe on aluminum cooling system these days. If you want for an extra $3 dollars you can use Zerex G-O5 same stuff as MB (it's who makes MB coolant) at Advanced Auto. If you replace the stuff that's in there now, you're throwing money down the drain.
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Only diesels in this driveway.
2005 E320 CDI 243k Black/Black
2008 Chevy 3500HD Duramax 340k
2004 Chevy 2500HD Duramax 220k