I had never heard of 10w40 diesel oil cc/cd since the 80's either, but Petro Canada now has a 10W40 in their Duron synthetic lineup. I think it is farely new.
I know of a local construction company that switched to it from Duron 15w40. They were extending intervals to 400 hours for the past 7 years with Duron. They actually had engines lasting longer with this oil after doubling the intervals. They have Cat D6R's with engines getting rebuilds at 15,000 hours. The techs at Ziegler Cat find 15k wear comparable to what they normally find at 10k. They have extended the interval with the syn 10w40 to 600 hours. Of course they do oil analysis and tested a few pieces with the new oil before changing the fleet to a new oil and schedule. This is with a fleet of Cat & John Deere excavators, artic trucks, dozers, Mack dump trucks and misc equipment all getting this oil and schedule. They usually buy used at 2-4k hour and run some pieces for the long haul before trading. Many times rebuilding engines rather than selling at 12-16k hours depending on the oil analysis. With previous oils used Mobil Delvac at 200 hrs, most equipment needed rebuilds by 12k except for some komatsu excavators that used to last longer. There is an ingersoll rand DD16 roller with a kubota 24 hp 3 cyl with over 10k hr on the clock still going strong with 400 hr service interval.
Petro Canada is hard to find except for bulk oil distributors. They sell mainly in Canada as the bottles come in liters.
For us homeowner Kubota tractor owners we don't run so many hours or see the savings on a large scale to extend intervals so much. I use 5w40. I used fleet farm rated 5w40 two years ago and ran 100 hours and did an analysis with great results. I currently have Valvoline 5w40 in the crankcase I found at walmart for $14.50/gallon! They priced it at conventional prices and I got lucky. It is not there anymore. My next change will be Delo 5w40 - I found that walmart recently for $19.95 / gal. I had used Mystic Jt8 10w30, but had some consumption in hot weather mowing. 1/2 quart in 50 hours. I didn't want to use 15w40 in winter and only run about 90 hours a year, so one change a year with 5w40 is my answer. No problems or oil usage. Starts great and gives me peace of mind. I would recommend any synthetic 5w40 as my oil of choice for Kubotas.
I know of a local construction company that switched to it from Duron 15w40. They were extending intervals to 400 hours for the past 7 years with Duron. They actually had engines lasting longer with this oil after doubling the intervals. They have Cat D6R's with engines getting rebuilds at 15,000 hours. The techs at Ziegler Cat find 15k wear comparable to what they normally find at 10k. They have extended the interval with the syn 10w40 to 600 hours. Of course they do oil analysis and tested a few pieces with the new oil before changing the fleet to a new oil and schedule. This is with a fleet of Cat & John Deere excavators, artic trucks, dozers, Mack dump trucks and misc equipment all getting this oil and schedule. They usually buy used at 2-4k hour and run some pieces for the long haul before trading. Many times rebuilding engines rather than selling at 12-16k hours depending on the oil analysis. With previous oils used Mobil Delvac at 200 hrs, most equipment needed rebuilds by 12k except for some komatsu excavators that used to last longer. There is an ingersoll rand DD16 roller with a kubota 24 hp 3 cyl with over 10k hr on the clock still going strong with 400 hr service interval.
Petro Canada is hard to find except for bulk oil distributors. They sell mainly in Canada as the bottles come in liters.
For us homeowner Kubota tractor owners we don't run so many hours or see the savings on a large scale to extend intervals so much. I use 5w40. I used fleet farm rated 5w40 two years ago and ran 100 hours and did an analysis with great results. I currently have Valvoline 5w40 in the crankcase I found at walmart for $14.50/gallon! They priced it at conventional prices and I got lucky. It is not there anymore. My next change will be Delo 5w40 - I found that walmart recently for $19.95 / gal. I had used Mystic Jt8 10w30, but had some consumption in hot weather mowing. 1/2 quart in 50 hours. I didn't want to use 15w40 in winter and only run about 90 hours a year, so one change a year with 5w40 is my answer. No problems or oil usage. Starts great and gives me peace of mind. I would recommend any synthetic 5w40 as my oil of choice for Kubotas.
