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Oils are very confusing. The recommendations posted are all excellent to follow. I use Rotella T 15-40 for my John Deere 4100 diesel. Ask your dealer if you can sub that for the 10-30 and still protect your warrentee.

Going back to the origional question.
Yes CC and CD are old designations. CD was replaced by CF which you will find listed.

Here is somewhat of an overview:
Mobil's website:
"Here is a short description of the diesel engine categories, starting with the most current.
CH-4 is a proposed category at this time, which we anticipate being finalized during the first half of 1999. CH-4 is being developed to address engine design changes required to meet new 1998 EPA emission standards.
CG-4 was developed for oils used in 1994 and later, low-emission, high-speed, four-stroke cycle diesel engines. It is also typically used for diesel engines using low-sulfur diesel fuel. Newer engines that are used on-highway or off-highway applications may call for CG-4 quality oils. One of the main advances in CG-4 versus previous quality levels is the ability of the oil to handle high levels of soot that is generated by some of these low-emission engines.
CF-4 was established in 1991 to specify oil quality for severe- duty, low-emission, four-stroke diesel engines produced in 1991 or later. Oils meeting this category offered improved control of oil consumption and piston deposits versus previous quality levels. CF-4 has essentially replaced the CE quality rating.
CF-2 was established at the same time to specify oil quality for severe duty two-stroke diesel engines. CF-2 has essentially replaced CD II.
CF was established for service typical of off-road, heavy-duty diesel engines and engines operating on higher sulfur fuels. The CF quality level essentially replaced the CD level.
CE was established in 1988 to specify oils for severe-duty diesel engines with turbochargers. This rating is essentially obsolete and oils meeting CF-4 are now used in applications calling for CE oils."

LK3054 oil
Kioti Tractors
Replies 10 Post by J. Bowen

I used a 60" Brushhog on my 4100. It didn't bog down but was definitely too heavy (450#)for frequent use with this lighter frame tractor. Front weights are definitely required

Some people, however, are probably doing just fine using lighter duty 60" brushhogs for light jobs.

In general I wouldn't recommend the 60". I sold the bushhog to someone with a heavier tractor.

Jim Bowen

JD 4100 and a 60 inch brushhog does it work
John Deere Tractors
Replies 11 Post by J. Bowen