F53 coolant change with motoraide

I did my 99 V10 a few years ago.The book says the capacity is 8 gallons.when I would drain the radiator I would get 4 gallons.I refilled with 4 gallons of distilled water and ran the MH.I would drive it to a local dirt bike track every weekend(90 mile round trip),and drain it again during the week.I did this during the summer so there was no freezing issues.I did this 5 or 6 times until the water came out clean,then refilled with 4 gallons of straight antifreeze.

I change my antifreeze, belt(s) and hoses in all my vehicles at 30,000. The belt(s) get done first, then the hoses. Then: I start the motor and wait until the thermostat opens up, pull off the bottom hose and let all that old stuff dump out into my container.. Then put new in. Maybe kinda tricky, as the thermostat might close off...gotta watch it, and when it re-opens, start adding more antifreeze until it reaches the "full" level of your container. Even then,watch it and make sure it stays at that level. If your RV came with green anti freeze, replace it with green. If gold (in color) replace it with gold.

Just the way I do things. Next year, I'll have 60,000 on the RV, will do it again. Maybe this time, the spark plugs, too. We'll see.

Captain_Happy wrote:
First drain the unit, then fill the cooling system with water. Turn engine and let it run until it warms up really good. Drain the water and re-fill system with anti-freeze mixed no stronger then 50/50 mix of your chose.

You may need to fill, run and drain more than once to get all of the old stuff out. Repeat until what you drain has no color at all.

When you refill, it is best if you use distilled water rather than tap water. That keeps the minerals out of the system at the start.

First drain the unit, then fill the cooling system with water. Turn engine and let it run until it warms up really good. Drain the water and re-fill system with anti-freeze mixed no stronger then 50/50 mix of your chose.