Really a better question to ask in a new thread. No need to be that shy!
[Moderators note: Split from, General, hi-mileage 2000]
But since you posted here, yes. There have been several reports of CAT's failing in the 90K range. High sulphur fuel appears to be the culprit in one case.
Most major oil companies reserve their low sulphur blend to urban areas where air quality requires or in their premimum grade.