The long life coolant of 5yr xxxxxx miles was used in my car. I typically change it by 4 yr.
Last time I left it for 5yrs and 15-20k miles.
When I changed, it was lighter in color than I expected.
After pouring it back in the bottle for disposal, I found some particles at the bottom of the tray (previously was used for oil but was dried not washed). These particles are of the size of sand or little bigger - prob about a dozen of them. After market radiator prob has about 80k,
I never seen them before. Have any of you had similar experience?
The pre-mixed universal coolant from Peak comes in two varieties–a 5-year and a 10-year version. I have used both, in different vehicles, without issue. In fact, I am currently running Peak 5-year coolant in my Daewoo Lanos, which originally came with silicated coolant, Peak 10-year coolant in my Chevrolet Silverado, which originally came with Dex-Cool, and in my Toyota Corolla, which originally came with Toyota-specific HOAT coolant.
Maybe I am missing something, last car that got killed (rear ended) had 90k after switching from dexron to peak global so I thought never have to worry about it again , " PEAK Global Lifetime 50/50 Prediluted Antifreeze & Coolant "PEAK Global LifeTime 50/50 Prediluted Antifreeze & Coolant features an advanced organic acid technology that provides lifetime protection for as long as you own your vehicle.* "
A road-construction replaced the water main in my area a few years ago, later found rust-colored sand clogging the faucet aerators. Asked construction guy why. He said it is just some rust particles has formed inside the iron pipe, gets knocked loose by the construction jolts. Your engine block is probably made of iron, and the particles you are seeing are probably the same thing. Normally expected. Of no concern.
I generally change-out coolant at 3 years irrespective of what version I use. The longer coolant stays in the engine, the more acidic. Coolant test strips are available to measure the coolant pH . It usually starts out in the 7.5-8.0 range when newly installed, then decreases. Below 7, that means it has become acidic. Best to change it out at that point. I wouldn’t allow it in any of my engines lower than 6.5.