So you're recommending an additive which adds catalytic converter destroying zinc and phosphate?
Is this an anecdotal assertion, or is supported by credible research? Why would zinc and phosphorus in Rislone be less harmful than the zinc and phosphorus taken out by the oil companies?
No not at all... Im simply saying that Riselone in particular is not snake oil... And that in particular it actually as helped the diesel owners community since the mandated change to the new CK4 type oils in the diesel industry. It does not appear that CK4 is a gas engine oil. Zinc and Phos have been in engine oils since as long as I can remember but the levels have been changed and other materials added in its place due to new EPA regs. 99% of what im telling you can be researched easily but folks get pretty concerned when a large manufacture says hey thats great trying to change the oil to be more friendly but it still needs to do its job on keeping equipment running and the ck4 by itself was not.
I'll do my best to explain how I was told by Shell when they explained to me the controversy with CK4 and CK3 oils. yes I called a dozen or so times and then finally someone said ok heres the basics. That and the oil fanatics and BITOG who posted actual samples with test results on the additive packages from the various ck3 and ck4 oils and after adding various "snake oils".
Diesels for a long time did not have true emissions systems like most modern cars and so their oils were quite a different formula. So if you bought a gas engine 10w-30 and a diesel rated oil 10w-30 they actually were very different and a diesel oil would shorten the life of cats in gas vehicles. But when much of the new EPA mandates and diesels started to come with DPF and DEF systems similar to gas engines their oils had to change too. Many in the petroleum industry called it a loophole for diesel oil essentially. Then in mid 2007 the DPF/DEF systems were installed from the factory on most diesels. prior too that many had an egr valve, a cat with no sensors and programming and that was it.
CK4 oils have reduced many of the ingredients and were replaced by different additive packages. to meet the environmental requirements and still meet MINIMUM API specs. However for some reason Ford did some testing on the CK4 blends and said if you don't use an oil on the approved list we wont warranty the engine. Fords oil was on like the 4th page so it was not some ploy to get folks to buy Motorcraft branded oils. Rotella even changed their oil additive package blend to be put on the list after almost a year.... I can't find the link still but blackstone and another popular oil sample company both confirmed that CK4 oil was in fact not as good as ck3 spec oil in MANY ways BUT they cautioned folks about mixing oil in the hopes of helping their trucks. A couple of folks did their best without destroying engines and posted it on bobistheoilguy this was maybe a year or two when I went to buy oil and i noticed everything said CK4 and had different labels so I researched it and thought what the heck is going on now I can't use the new oil? I was VERY skeptical CK4 was not as good but numerous results posted showed although it wouldn't blow up your engine it did not hold up near as well as the previous CK3 spec oil.
Bobistheoil guys is full of crap and on the other hand they have some amazing data supported by true research and folks 10x smarter than me. I hope I didn't make it even more muddy? Also im not saying Riselone is the savior but that when the whole CK4 oil freaked the diesel world out some folks put in a ton of effort with their own money, time and equipment and for diesels at least 1 quart in a 15quart system was enough to change the oil in a way two companies said had no negative impact on the blend but improved it to almost the same as the ck3 oils.
Its the same reason actually Amsoil didn't get the API rating on their oil for years. They wouldn't blend it according to EPA specs and it would not pass. so it was categorized as offroad/race only. It wasn't until a few years ago they changed. Im also not vouching for Amsoil as I will never pay their price but just another example of how just because a product claims to make oil better doesn't necessarily mean it doesn't. You can research Archoil ar9100 yourself. I've personally seen the buzz test results on my own 2004 and 2006 F350 and used it more on others. Im much more of a powerstroke guy than a subaru guy but I wanted a safe and reliable awd for my wife so I dabble here on the forester forum lol.
Here is one sample I found on a powerstroke forum note my name being used there too lol. But Bobistheoilguy had way more of what i considered data to validate some additives actually helping oils.
Since the transition from CJ-4 to CK-4 I decided to supplement Rotella T6 5W40 with a ZDDP additive. Attached is the UOA after 6000 miles. I have analysed many UOA's in my life but I can say without a doubt this is the best one I have ever seen. All I can say is WOW!!!! Caveat: Do not use a...
www.powerstroke.org
Do modern motor oils formulated with reduced zinc and phosphorus anti-wear additives provide adequate engine protection? It’s a question some industry insiders, auto enthusiasts and motorists have been asking for years. And as engine builders and classic-car owners continue to experience engine...
www.amsoil.com
bob is the oil guy has become harder to find older threads lately.