Oldoak
Veteran Member
- Joined
- Feb 20, 2013
- Messages
- 1,817
- Tractor
- Kubota L5060GST, J D X758 GT, J D 855D XUV
Yep, I never change oil based on the color. My oil changes are based on hours of service according to the owners manual or annually, which ever comes first.The oil in a few of my diesels does not turn black right away, others do as soon as you start them up. I think it has to do with how completely the old oil drains out. On those that to not turn black right away, they do in fairly short order maybe 10 hours or so. So as was mentioned, black oil in a diesel is normal.