Join Date: Aug 2009
Location: Washington, the state
12,000 km is very low. There are a couple of Suzuki maintenance recommendations that make little sense. The early replacement of radiator hoses is another.
The plugs are copper, not iridium.
Running iridium plugs for your 180,000 km runs the risk of carbon build up on the ends of the plugs, and they damage the cylinder head threads when they are removed after that long time. By the way, iridium plugs do not run better than new copper plugs, but they run like new for a very long time.
"Older people who are reasonable, good-tempered, and gracious will bear aging well. Those who are mean-spirited and irritable will be unhappy at every period of their lives.
"Let each of use properly whatever strengths he has and strive to use them well. If he does this, he will never find himself lacking."
Marcus Tullius Cicero