Originally Posted by EastCoastCB
A cat 3126 doesn't cost any more to operate or repair than any Navistar product of the same era.
If my Cat fails in the same way as my last DT did I've checked and the parts would be substantially cheaper.
I stand corrected. That is good information to have from someone who has priced the similar parts for engines from the two manufacturers. My comment was based on what I have read here. CAT may have gotten an undeserved bad rep on it's part prices.
Most of us are looking at buses that will have some milage on them. If you are looking at a bus it would be a good idea to research what common problems that model/year engine may have. It would give you an idea of what to look for when checking the bus out, looking at service records or talking to previous owners. Also having an idea of what repairs for these common failures cost might help with your decision making.