quote:The 7000 oils are synthetic blends, about 80% Group II and 20% PAO.
Originally posted by Scott: Just out of curiousity, why is the dino/moly combination important? You should check out the Schaeffer Oil site (http://www.schaefferoil.com - I have no financial interest, but DO like their products). They probably have a dino/moly oil. However, their 7000 series synthetics will run longer and I believe have at least 200ppm of moly.
quote:I thought ZDDP was the main anti-wear agent and in it's reduced amounts now, esters(boron) at normal operating temperatures. I think Moly requires an extremely high temperature and much larger quantity than in most oils to function as an anti-wear agent. Isn't it mainly there to boost TBN and friction modify in the run of the mill oils? Under most driving conditions, Moly would never see the temps required to activate it as an anti-wear agent.
Originally posted by Bror Jace: "Moly is only one small link in an infinitely long chain of variables that determine what makes an oil good or bad. The only thing that matters is the 'big picture,' or how all the variables mesh and synch together." Mostly true, but it's a key ingredient in preventing wear and most of the better oils have a fair amount of it. The 5W20s have a double dose ... probably for a good reason. They also have shown very good wear prevention. Max-Life, when it first came out (loaded with moly), was putting up some exceptional UOA results and quieted down engines with bad cases of piston slap. When they removed moly from the formula wear numbers went up some and the oil failed to dampen piston slap noise. All things being equal (but of course they almost never are), I'll take more moly. --- Bror Jace
quote:I thought that was debunked here a long time ago. You don't honestly believe that? Just think about it for a bit.
Originally posted by haley10: ...Too much Moly kinda scares me into thinking that an oil may be so friction modified that the rollers will not spin uniformly and cause uneven wear.
quote:Exactly. I can't help but laugh everytime I see this mentioned. If the oil reduces friction to the point the rollers won't roll, then how in the heck are you going to get uneven wear? If there is NO FRICTION there is NO WEAR. Hello?
Originally posted by Jason Troxell: Just think about it for a bit.