Hole by Engine Coolant Cap/Best Cylinder to purchase?

[Zedicus]

has the coolant ever been changed?

the deposits appear to be from hard water, not exactly salt but will do the same thing. and they can eat aluminum and plastic.

even if it is not hard water that was put into the coolant system, if the coolant has never been changed, the coolant that keeps the water from becoming corrosive will break down over time and the water will slowly eat metal and some types of plastic.

the 1nz i just got done taking apart had basically 0 maintenance in 100,000 miles and the area between the head and block looked like swiss cheese. a straight edge laying on it had more light coming through the gaps than a kids night light.

NOTE: climate has some affect on this. Kansas has WILD temp swings and this causes condensation and break down of chemicals more quickly. a car out here will have NO rust or any body issues, but low compression, if the owner never did any maintenance. oil, brake fluid, coolant, gas, will all oxidize and absorb moisture internally and eat the engine from the inside.

also i have replaced a few radiators in my time that looked just like that, they were eaten from the inside where the coolant meats atmosphere due to the issue i described.

[T.Yaris07]

Originally Posted by Zedicus

has the coolant ever been changed?

the deposits appear to be from hard water, not exactly salt but will do the same thing. and they can eat aluminum and plastic.

even if it is not hard water that was put into the coolant system, if the coolant has never been changed, the coolant that keeps the water from becoming corrosive will break down over time and the water will slowly eat metal and some types of plastic.

the 1nz i just got done taking apart had basically 0 maintenance in 100,000 miles and the area between the head and block looked like swiss cheese. a straight edge laying on it had more light coming through the gaps than a kids night light.

NOTE: climate has some affect on this. Kansas has WILD temp swings and this causes condensation and break down of chemicals more quickly. a car out here will have NO rust or any body issues, but low compression, if the owner never did any maintenance. oil, brake fluid, coolant, gas, will all oxidize and absorb moisture internally and eat the engine from the inside.

also i have replaced a few radiators in my time that looked just like that, they were eaten from the inside where the coolant meats atmosphere due to the issue i described.

Hello, apologize for the delayed response. Thank you for sharing that information with me. I wasn't aware of what you wrote and must be more diligent in my upkeep and maintenance.