I'm told and use the absolute best is a complete coolant: Is it OK to copt/paste the below from another forum?
Fleetguard ES Complete is not an OAT coolant. It is understandable how you could have come to that conclusion by reading the literature. Fleetguard has an OAT but it is not the ES Complete. It is the ES Optimax. The marketing dept is responsible for the confusing wording. ES complete is a good quality coolant that is precharged with DCA-4. I thing it is precharged with 2.5 units. An OAT coolant normally contains about 10% organic additives. The ES Complete contains less than 1%. Two acids make up that .8% and I think at least one of them comes from the DCA-4.
I think your choice of coolant and your reasoning is good. If you flush your system, install a non charged coolant filter, and a 50/50 mix of Fleetguard ES Complete you have formed the foundation for a well maintained system. I would use the EG version. No particular reason other than that is what I am most familiar with. Next I would monitor the coolant with Fleetguard 2602 and 2607 test strips. When the SCA level started approaching the 1.2 level I would replace my filter with a new 4 unit Fleetguard filter. **I would not change the coolant until the 2607 strips indicated it was time. If you don't have some type of mechanical failure and contaminate your coolant you may be surprised how long that is. You can use this same practice with any low silicate coolant and DCA-4.
**Trucks are used in so many different ways that it is hard to have a standard method that best fits every application. As far as my personal truck, My coolant usually gets changed because my hoses are being changed. I like to replace hoses about every 4 years. This usually ends up being about 50-60,000 miles. The coolant I remove is fine I just want new. If I were driving 50,000 miles per year I would probably still change the coolant when I changed hoses except that would be about every two years. One has to evaluate his particular situation and make decisions based that. One of my favorite sayings "There Are No Rules, You Have To Think".
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On my bottle, it says something like: "This coolant is compatable with ALL systems"
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Fleetwood Providence 2008 40e
Ford F-350 4x4 Diesel 6.0L 2006
Honda CR-V 2006
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