Join Date: Nov 2011
Location: Moyock, North Carolina
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I agree with dieselmatt above, only noting that I think the high heat of the egr cooler is a big factor in the Ford gold coolant breaking down. Without the egr cooler I'd venture to say you'd have less issues with the gold, but i switched to elc anyway. Cat ec-1 is the rating you need, I used rotella ultra elc, which I got from a local international dealership, along with the restore and restore plus chemicals to flush it with. Several people have reported actually clogging their oil cooler after flushing, so if you plan to change the oil cooler, i'd recommend changining it after you flush with the restore and restore poise, then lots of distilled water.
Generally speaking I wouldn't say coolant filters are needed, as in needed like oil filters are, but on 6.0's, I would highly highly recommend them. If I'm not mistaking, I think some of the navistar 6.0's use coolant filters in the medium duty trucks...and i know for a fact that the over the road tractors use coolant filters. I bought the sinister kit, other than being blue, I liked it a lot, great quality.
PS. Look for pgreensvt, read the links in his Sig, lots of good info there, and was the starting point of my research into elc, and Ford gold and the greater six liter cooling system.
Last edited by Gearhead2012; 12-06-2011 at 05:31 AM.