![]() ![]() In this article, we discuss the 8.3 Cummins diesel engine specs, problems, and reliability. Many regard the 8.3L as a legend for its great balance of performance and durability. However, the ISC 8.3 diesel is likely best known for its use in motorhomes. This made it a great engine for fire trucks, trash trucks, and heavy equipment. It offers up to 400 horsepower and 1075 lb-ft of torque. The ISC 8.3 Cummins came out in 1998 and uses the same basic design. CJ4 oils typically are very good at this, as they have been formulated to deal with soot generated by EGR systems.Cummins began producing the original 8.3 C-series engines in 1985. ![]() Then you should find an oil that has high dispersancy capability. If you have modified your engine by increasing the fueling, there may be an issue with more rapid soot loading of the oil. The synthetic media actually is more effective at filtering small particles, yet has lower pressure drop than normal cellulose media filters. But like dnewton3 said ULSD fuel has made high TBN unnecessary.įleetguard filters are great, and if you are using their synthetic media version, that's even better. DMX has specifications similar to PB Classic: it is CI4+ rated, has very high TBN, and high zddp content. I haven't yet found it at my local truck stop, but Mobil's help line tells me it's available. A conventional oil that I have read about recently is Mobil Delvac MX. I'm thinking either Rotella T6 or Schaeffer Supreme 9000.īut since you're running 4000-mile OCI's, and driving in southern Cal, just about any conventional 15w40 is fine for you. I have noticed an unacceptable increase in oil consumption, and plan on switching to something else on the next change. When they stopped making PB Classic, I switched to Mobil 1 Turbo Diesel Truck, mostly to take advantage of lower viscosity on cold starts. I ran Valvoline PB Classic for years on 15k mile change intervals. If you're changing oil at 4k mile intervals, you're not really getting all the life out of it that you can. ![]()
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December 2022
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