Do not remove radiator cap to add coolant to
system. When adding coolant to maintain correct
level, do so at coolant reserve/overflow tank. Use a
50/50 mixture of ethylene glycol antifreeze containing
Alugard 340-2 y and low mineral
content water.
Remove radiator cap only for testing or when refilling system after service. Removing cap unnecessarily can cause loss of coolant and allow air to enter system, which produces corrosion.