synthetic or regular oil on detroit series 60 engine question

[encantotom]

one of the forum members asked me today what oil to use in his series 60. all i can do is share what i do and that is to use regular oil as the previous owner was doing as well. my bus mechanic uses regular oil in his huge fleet of charter buses unless it is under warranty and requires synthetic for the warranty.

i am not recommending one way or another, just what decision i made.

when i got my oil changed the first time i did an oil sample and had it analyzed as a baseline and will do that each time i change the oil.

i attached a poll question as to which oil you use in your series 60 to just see what the rest of you are doing.

thanks

tom