Antifreeze in Fleetwood Pusher
I have a Bounder Diesel Pusher with C7 Cat. I have called Freightliner, Fleetwood, Cat. to find the captivity for a change of antifreeze in the unit (34H). Cat thinks its 9-1/2 gallons without heater,...
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Without knowing the system capacity, the only way to accurately get a 50/50 mixture is to remove 100% of the contents of the system and then add exactly half coolant and half distilled water.
That can be done, but is a PAIN in the back side--you would need to remove the heater hose and use compressed air to blow out the heater hoses and heater core and then hope that you can get the residual water out of the bottom of the block. Don't know if that is possible or not, having never worried about it.
The way I change coolant, knowing total system capacity is to do the final rinse with distilled water, then add 50% of the system capacity with coolant concentrate. Then top off with distilled water. Doesn't matter if you only add one gallon of distilled water (meaning large volume of water that was not drained) or a larger amount, you still have the proper 50/50 mixture.
The other thing you can do is guesstimate capacity and then test after a week or so (coolant has time to completely mix). Then if not 50/50, drain some out and top off with the required fluid-- distilled water or coolant concentrate.
Easier to verify coolant capacity. So, I would have a more detailed conversation with chassis AND coach maker to verify capacity.
That can be done, but is a PAIN in the back side--you would need to remove the heater hose and use compressed air to blow out the heater hoses and heater core and then hope that you can get the residual water out of the bottom of the block. Don't know if that is possible or not, having never worried about it.
The way I change coolant, knowing total system capacity is to do the final rinse with distilled water, then add 50% of the system capacity with coolant concentrate. Then top off with distilled water. Doesn't matter if you only add one gallon of distilled water (meaning large volume of water that was not drained) or a larger amount, you still have the proper 50/50 mixture.
The other thing you can do is guesstimate capacity and then test after a week or so (coolant has time to completely mix). Then if not 50/50, drain some out and top off with the required fluid-- distilled water or coolant concentrate.
Easier to verify coolant capacity. So, I would have a more detailed conversation with chassis AND coach maker to verify capacity.
