I don't see any point of disputing here. Am driving one Toyota and I service my car every 10,000km since day one. My service book also stated 10,000km. Like I said if you want to service at every 5,000km also no issue, your money anyway. The SA can also record down in your service book as it is provided there with 5,000km, 10,000km, 15,000km and so forth. Even my SA also told me to service every 10,000km except the first two service which was at 1,000km and 5,000km. This issue has been discussed over time again and again. You walk into any Toyota Service Center by UMW, it is clearly stated at 10,000km. Where's the issue of warranty ?
Few thing you are confused about:
1. I have absolutely no intention of doing it at 5000-km like you claimed. Don't know where you got that funny idea.
2. I have every intention to keep my warranty intact. What the SA told you DOES NOT count so he can say anything he wanted with the famous rubbish about FS can last twice as long as Mineral because it is twice as expensive or claiming pig can fly. What I wanted to know is, what is Toyota's position on this because the service record clearly states 5,000-km, 10,000-km, 15,000-km like you mentioned. And if do the calculation, that means Toyota is saying service every 5,000-km.
3. Have you ever claim expensive engine warranty to ascertain your warranty still intact with 10K-km service?
I prefers to use my head than follow the crowd. After all, it is my money and not theirs.