Originally Posted by BIGBRU01SSEI
Also found out the previious owners had the LIM gasket changed last year, so that makes me feel better. I plan on changing out the coolant every year , does this sound like a good plan.
If you are still running Dex, replacing it with "mixes with any color or type" coolant and changing that every few years would be a better idea.
If you insist on running Dex, (a decision I would consider equivalent to smoking cigarettes to protect your lungs because you work without a mask removing asbestos for a living), changing it every year is probably NOT a good idea unless you are sure that you are eliminating every bit of air from the system when it is changed. That is because air and Dex don't get along well, and just changing your coolant can result in the introduction of air. Even without air, Dex will turn acidic in time making your LIM gaskets wish they belonged to someone else. So, changing the Dex before that happens is a necessity. All are not agreed on what that time is, however. The manufacturer says the change interval is five years, others think that time is more like five minutes. Fresh Dex is better than old Dex in the same way that filter cigarettes are better than unfiltered cigarettes in the previous example.