Ranger wrote:
[quote]Patton wrote:
[quote]Scott, was the oil the old diesel spec,CI+4; or the new spec CJ?
If the oil was CJ it will have less additive than the earily report in the magazine where we tested the CI. Regardless, the result should be the same (or close) to the CJ that was analysed in one of the later magazines.
RP,[/quote]
I’m pretty sure that Valv Premium Plus was a CI+4. To my aggravation I seemed to have prematurely given you back the issue that had the article where 20 oils were analyzed. I thought that I’d copied that article but I hadn’t. Valv Prem Blue was one of the oils analyzed in that article. The articles that I did copy were all put on my website in the oil debate section.
My bet is that the oil additive package changed in the last year because Valvoline decided that they wanted the later CJ spec. I imagine that they made a judgement call that “latest spec” was better for marketing vs. hoping that lots of folks understood that the older spec (which allowed more ZDDP) was better for older motors.
It just occured to me that I still have the jugs. I’ll look at them tonight…while I’m fastening my damn air dam back on, and trying to figure out why my passenger window motor is suddenly inop.[/quote]
CJ4. Bastards changed their additive package. I’d not have known if not for the Blackstone report. Can’t depend on anything these days.