Originally Posted By: Bigdaddyeasy
I see your point. I'd like to think there's more than just a marginal difference in hmm as far as its ability to stop leaks but since you put it that way, I can't say I know it to be true or not.
I would hope so, too, but I don't know how much room the ILSAC limits give them off the top of my head. And that's exactly it. We don't know if it's marketing talk or if it's actually telling us something.
This is the GF-5 standard, but that doesn't tell me much. Apparently, this is new to ILSAC with GF-5, but has been around for HDEOs since CH-4 and with GM on their own, according to
this. Maybe Mola or someone similar will pass through and straighten this mess out.
Originally Posted By: Bigdaddyeasy
Perhaps they felt the extra zddp crowd wasn't lucrative enough.
Is the ILSAC HM synthetic blend market large enough? It isn't completely about ZDDP, either. HM oils used to be a little thicker within the grade, not to mention have some extra AW content.
What I really think has been going on is that someone has been crushing caffeine tablets and dumping them in the water cooler in Shell's marketing department. They've been hyperactive, yet unfocused, for a significant period of time.