jmac1970
New member
CJ-4 specifications require engine oils to exhibit significantly better soot handling properties. Thats why you keep hearing that the older oils will be phased out by next year. Keep reading your synopsis.
API Engine Oil Ratings
- Thread starter rScotty
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jmac1970
New member
Supreme 7000 15w-40, 10w-30, 5w-30 and Diesel Treat 2000
WH401
Platinum Member
If it took care of all the issues than they would offer it in a CI-4+ grade as well, which they don't.
I'd also love to see where you've found that they're going to stop making CI-4+ oil in the next year.
CJ-4 has had the antiwear additive ZDDp reduced because it was plugging the "smog" filters on newer diesels. TSC and even walmart still have CI-4 rated store oils I think both oils are made by Warren dist. ZDDp has been used for over 60 years and it worked good.
http://biomassive.com/filez/good_oil_analysis_article.pdf
http://biomassive.com/filez/good_oil_analysis_article.pdf
medicshawn
Platinum Member
I sent an email to Kubota inquiring about What oil to use in my L3940. The manual shows one thing, the website another. I got a voicemail from Kubota in response to my email. The guy said to call him and he would discuss it with me. I'll let you know what I find out tomorrow.
medicshawn
Platinum Member
They Kubota rep I talked to today said it's ok to use Cj spec oil As long as you are using low sulfur fuel. He said problems arise when using Cj oil with high sulfur fuels. He said if you're still using the high sulfur fuels stick with the older spec CI oil.
He also said not to use synthetic till after 100 hours to make sure your rings break in.
He also said not to use synthetic till after 100 hours to make sure your rings break in.
Charlesaf3
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Thanks for posting this. Useful info
ihookem
Gold Member
Amsoil makes a diesel oil for the newer 07 diesel trucks and newer. It's CJ rated. My dealer told me not to use it in my 05 GMC because it isn't as good as the old oil. They don't even recommend extended oil drains with it. It doesnt' cost any more than the old stuff though.
GIJOE
Gold Member
Here is a web site that has some good info about the API CJ-4 spec.
CJ-4 WEBSITE Check out the FAQ section, question 6, 7, and 8 and also the 2006 Engine Oil Guide.
According to the API spec the CJ-4 oils can be used in all diesel applications ranging in sulfur content up to 500 ppm, and also exceeds the performance criteria and can effectively lubricate engines calling for the previous categories. The only thing it may effect in an older engine would be the oil drain interval. If you don't extend your oil drain interval or if you have UOA done, I don't think there would be a problem. I'm not an expert, JMO.
Joe
CJ-4 WEBSITE Check out the FAQ section, question 6, 7, and 8 and also the 2006 Engine Oil Guide.
According to the API spec the CJ-4 oils can be used in all diesel applications ranging in sulfur content up to 500 ppm, and also exceeds the performance criteria and can effectively lubricate engines calling for the previous categories. The only thing it may effect in an older engine would be the oil drain interval. If you don't extend your oil drain interval or if you have UOA done, I don't think there would be a problem. I'm not an expert, JMO.
Joe
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Amsoil does make diesel oils for before and after the ? date; which specs use by one type before and another type after the date noted in their specifications. I seem to remember it was before and after 2007 ? but it could easily be a different date/year.
IMHO, it has to do with emissions and ULSD, additives and politics, and engine wear due to lower amounts of lubricants in the ULSD available now.
Whatever the reasons, right or wrong, politically motivated or not it is no easy task figuring out what to use -
I am about to do my 50 hour service at about 85+ hours and switch to Amsoil synthetic for most recent diesels engines.
I am sure it will work well for my tractor.
Good luck to the rest of you- and keep asking the questions of the manufacturers- to make them say what it is they want us to use to keep warranties valid and honored.
CM
IMHO, it has to do with emissions and ULSD, additives and politics, and engine wear due to lower amounts of lubricants in the ULSD available now.
Whatever the reasons, right or wrong, politically motivated or not it is no easy task figuring out what to use -
I am about to do my 50 hour service at about 85+ hours and switch to Amsoil synthetic for most recent diesels engines.
I am sure it will work well for my tractor.
Good luck to the rest of you- and keep asking the questions of the manufacturers- to make them say what it is they want us to use to keep warranties valid and honored.
CM
