Automotive vs. RV antifreeze
Can I use regular automotive antifreeze in the black and gray water tanks and sink traps or must I use the RV antifreeze? I am in NE AR and only blow out the water lines to winterize our MH.
Forum Discussion
When I had my travel trailers, I blew out the lines with air...then put a cupfull of auto anti-freeze in each trap, then divided the left over between the toilet (blackwater tank) and the shower (grey water tank). Never a problem. I used air because I did not have a waterheater by-pass valve system.
With the motorhome i could do the same, but use the system the motorhome manufacturer came up with: ball valves for the water heater bypass and a "inlet to pump" ball valve right next to each other, so i use the pink antifreeze thruout. Takes about 3 gallons. Whatever is left over, I put a cupfull in each trap and divvy up the rest between the two tanks.
Question: Why does "Prestone" brand Marine/RV antifreeze cost twice as much as the "no-name" products when both are the same and do the same thing with the same "Good to -20" ?
With the motorhome i could do the same, but use the system the motorhome manufacturer came up with: ball valves for the water heater bypass and a "inlet to pump" ball valve right next to each other, so i use the pink antifreeze thruout. Takes about 3 gallons. Whatever is left over, I put a cupfull in each trap and divvy up the rest between the two tanks.
Question: Why does "Prestone" brand Marine/RV antifreeze cost twice as much as the "no-name" products when both are the same and do the same thing with the same "Good to -20" ?
