So my new Bonne has the Oil Life System and it'* using standard 10W-30. I'm thinking about switching to synthetic. If I do that there'* no way for correcting this on the DIC is there?

You can use synthetic. as far as i know, the oil life monitor will not change function at all.

But synthetic oil goes longer between changes. How would it know the difference?

It doesn't know the difference. The Engine Oil Life parameter is calculated by the PCM and does not take into account type or viscosity of oil. I think Oil Life percentage may be a function of miles driven from the last reset of the Oil Life Monitor on the DIC.

My owners manual says "This (oil life) is not based on mileage, but on engine revolutions and engine operating temperature." So the question stands. How do you go synthetic and have the Oil Life System work?

Yes, I can confirm that, I just looked in the owners manual. Strike what I said in my previous post. : ) What you're asking may not be possible if the software (parameters for oil life) that the PCM utilizes is written for conventional oil & change intervals. I would ignore the Oil Life Monitor if using synthetic.

Hm, I wonder if it'* a mod intense could do?

Personally I think it'* to lenient to begin with and is perfect for synthetic oil. I went just over 5000 miles the first time I changed the oil and that was on the non-synthetic 10W-30 from the dealership. I now run synthetic 5W-30. But I can't be sure until I change the oil again.

I put synthetic in mine in November, and I didn't write down the mileage, but I'm sure I'm between 6k and 7k miles, and my oil monitor is still at like 40%.