Coolant

[Frango100]

What type of coolant are you guys using in your cooling system?
Overhere guys are telling me to not use additives, because it can cause leaks and/or can cause blocking the radiator. The manual is only mentioning to use a rust inhibitor (8A-19546-C), but canīt find any alternative for this number.
Not using any additive would result in corrosion and lowering the boiling point of the coolant, so is no good alternative.

[simplyconnected]

Use a GOOD, NAME BRAND coolant like Prestone or Zerex. These contain phosphoric acid for rust prevention and they also include water pump lubricants. Historically, we used the green-colored coolant but today's antifreeze is compatible with the orange as well. Always read the label.

If you change your antifreeze before the phosphoric acid is neutralized (by rust), your head gaskets will last without rusting holes through the coolant passages. This is a major overheating cause in classic car engines. Folks don't change their coolant soon enough because they only measure the 'cooling' part. - Dave

[Frango100]

Ok, thanks for that. Those brands i believe we donīt have overhere, but i will see what the local brands are made of.

[tbird430]

Since I started my T-bird "dry", I went with the Ford extended life "gold" coolant they used in the 2005-2012-ish diesel trucks & distilled water.

So far so good.

-Jon in TX.