Hope everyone had a great Thanksgiving ! Got a question concerning the new CJ 4 oil formulation. I just changed my oil and used Rotella CJ 4 with the new Triple Protection and now I'm doubting if it was the right choice. Truck is a 94' 12 valve. All the stuff I read on this new oil says it's far superior to CI4. I always used Mobil Delvac CI 4. Diesel Power Mag. says by all means to use it in older diesels to reap the benifits. Shell's website says it is a far superior oil than CI 4 and would benefit older diesels. Internationals website says the same thing. Whether 500ppm LSD is used or 15ppm ULSD is used DPF or no DPF CJ4 is the better oil. Issue 54 of this great magazine
TDR has an article in the Member to Member section with John Martin formerly of Lubrizol and has him stating that he does NOT recommend using CJ 4 oil in diesels without a DPF which would be pre 2007 trucks and the majority of the trucks on this site. Quote " If you don't have an engine equipped with a DPF, by all means utilize an API CI 4 oil! Your engine will thank you for it!" Is this a typo? I would tend to think moving up an API Classification every aspect of the oil would be better. I know Shell wants to sell oil but with Rotellas track record if they say CJ4 is a better oil and older diesels would benefit I gotta tend to believe them. What do all of you think?
