The info on the Gates hoses is no longer valid, they have become some of the worst hoses on the market. I have had some of them delaminate. The post is from 13 years ago, today I use OE only for coolant hose, the JD coolant is still a great coolant.2000 GM 3800.
Replaced all hoses with Gates ECR hoses and new GM thermostat.
Flush refill with 6qts John Deere Coolguard original formula and 6 qts distilled water.