I plan on switching to 0W-30 Amsoil synthetic in my H2, at how many miles should I make the conversion?

Thanks

I went with Mobil 1 (5-30) at 4000 miles. I am a Mobil 1 fan and have used in 7 different vehicles- the rest of the vehicles eventually fall apart, but the engines are strong (140,000 k)

:flag

You will be O.k. at 4000 miles. I have a 2004 and I use Amsoil. Go to Amsoil.com and click on the product look up guide. Put in your info (Year,AM General,H2 etc.) Read all the notes. Amsoil recommends 5-30 for my year.